400989680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:288

約数の個数: 240

約数和(自身を含む): 1219921920

約数和(自身を除く): 818932240

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 80, 91, 95, 104, 112, 130, 133, 140, 152, 169, 182, 190, 208, 223, 247, 260, 266, 280, 304, 338, 364, 380, 446, 455, 494, 520, 532, 560, 665, 676, 728, 760, 845, 892, 910, 988, 1040, 1064, 1115, 1183, 1235, 1330, 1352, 1456, 1520, 1561, 1690, 1729, 1784, 1820, 1976, 2128, 2230, 2366, 2470, 2660, 2704, 2899, 3122, 3211, 3380, 3458, 3568, 3640, 3952, 4237, 4460, 4732, 4940, 5320, 5798, 5915, 6244, 6422, 6760, 6916, 7280, 7805, 8474, 8645, 8920, 9464, 9880, 10640, 11596, 11830, 12488, 12844, 13520, 13832, 14495, 15610, 16055, 16948, 17290, 17840, 18928, 19760, 20293, 21185, 22477, 23192, 23660, 24976, 25688, 27664, 28990, 29659, 31220, 32110, 33896, 34580, 37687, 40586, 42370, 44954, 46384, 47320, 51376, 55081, 57980, 59318, 62440, 64220, 67792, 69160, 75374, 81172, 84740, 89908, 94640, 101465, 110162, 112385, 115960, 118636, 124880, 128440, 138320, 148295, 150748, 162344, 169480, 179816, 188435, 202930, 220324, 224770, 231920, 237272, 256880, 263809, 275405, 296590, 301496, 324688, 338960, 359632, 376870, 385567, 405860, 440648, 449540, 474544, 527618, 550810, 593180, 602992, 716053, 753740, 771134, 811720, 881296, 899080, 1055236, 1101620, 1186360, 1319045, 1432106, 1507480, 1542268, 1623440, 1798160, 1927835, 2110472, 2203240, 2372720, 2638090, 2864212, 3014960, 3084536, 3580265, 3855670, 4220944, 4406480, 5012371, 5276180, 5728424, 6169072, 7160530, 7711340, 10024742, 10552360, 11456848, 14321060, 15422680, 20049484, 21104720, 25061855, 28642120, 30845360, 40098968, 50123710, 57284240, 80197936, 100247420, 200494840, 400989680]

約数ペア:

[(1, 400989680), (2, 200494840), (4, 100247420), (5, 80197936), (7, 57284240), (8, 50123710), (10, 40098968), (13, 30845360), (14, 28642120), (16, 25061855), (19, 21104720), (20, 20049484), (26, 15422680), (28, 14321060), (35, 11456848), (38, 10552360), (40, 10024742), (52, 7711340), (56, 7160530), (65, 6169072), (70, 5728424), (76, 5276180), (80, 5012371), (91, 4406480), (95, 4220944), (104, 3855670), (112, 3580265), (130, 3084536), (133, 3014960), (140, 2864212), (152, 2638090), (169, 2372720), (182, 2203240), (190, 2110472), (208, 1927835), (223, 1798160), (247, 1623440), (260, 1542268), (266, 1507480), (280, 1432106), (304, 1319045), (338, 1186360), (364, 1101620), (380, 1055236), (446, 899080), (455, 881296), (494, 811720), (520, 771134), (532, 753740), (560, 716053), (665, 602992), (676, 593180), (728, 550810), (760, 527618), (845, 474544), (892, 449540), (910, 440648), (988, 405860), (1040, 385567), (1064, 376870), (1115, 359632), (1183, 338960), (1235, 324688), (1330, 301496), (1352, 296590), (1456, 275405), (1520, 263809), (1561, 256880), (1690, 237272), (1729, 231920), (1784, 224770), (1820, 220324), (1976, 202930), (2128, 188435), (2230, 179816), (2366, 169480), (2470, 162344), (2660, 150748), (2704, 148295), (2899, 138320), (3122, 128440), (3211, 124880), (3380, 118636), (3458, 115960), (3568, 112385), (3640, 110162), (3952, 101465), (4237, 94640), (4460, 89908), (4732, 84740), (4940, 81172), (5320, 75374), (5798, 69160), (5915, 67792), (6244, 64220), (6422, 62440), (6760, 59318), (6916, 57980), (7280, 55081), (7805, 51376), (8474, 47320), (8645, 46384), (8920, 44954), (9464, 42370), (9880, 40586), (10640, 37687), (11596, 34580), (11830, 33896), (12488, 32110), (12844, 31220), (13520, 29659), (13832, 28990), (14495, 27664), (15610, 25688), (16055, 24976), (16948, 23660), (17290, 23192), (17840, 22477), (18928, 21185), (19760, 20293)]