20105693920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1\times {\mathrm{353}}^1$

素因数の和:717

約数の個数: 192

約数和(自身を含む): 51929760960

約数和(自身を除く): 31824067040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 139, 160, 197, 208, 260, 278, 353, 394, 416, 520, 556, 695, 706, 788, 985, 1040, 1112, 1390, 1412, 1576, 1765, 1807, 1970, 2080, 2224, 2561, 2780, 2824, 3152, 3530, 3614, 3940, 4448, 4589, 5122, 5560, 5648, 6304, 7060, 7228, 7880, 9035, 9178, 10244, 11120, 11296, 12805, 14120, 14456, 15760, 18070, 18356, 20488, 22240, 22945, 25610, 27383, 28240, 28912, 31520, 36140, 36712, 40976, 45890, 49067, 51220, 54766, 56480, 57824, 69541, 72280, 73424, 81952, 91780, 98134, 102440, 109532, 136915, 139082, 144560, 146848, 183560, 196268, 204880, 219064, 245335, 273830, 278164, 289120, 347705, 355979, 367120, 392536, 409760, 438128, 490670, 547660, 556328, 637871, 695410, 711958, 734240, 785072, 876256, 904033, 981340, 1095320, 1112656, 1275742, 1390820, 1423916, 1570144, 1779895, 1808066, 1962680, 2190640, 2225312, 2551484, 2781640, 2847832, 3189355, 3559790, 3616132, 3925360, 4381280, 4520165, 5102968, 5563280, 5695664, 6378710, 7119580, 7232264, 7850720, 9040330, 9666199, 10205936, 11126560, 11391328, 12757420, 14239160, 14464528, 18080660, 19332398, 20411872, 25514840, 28478320, 28929056, 36161320, 38664796, 48330995, 51029680, 56956640, 72322640, 77329592, 96661990, 102059360, 125660587, 144645280, 154659184, 193323980, 251321174, 309318368, 386647960, 502642348, 628302935, 773295920, 1005284696, 1256605870, 1546591840, 2010569392, 2513211740, 4021138784, 5026423480, 10052846960, 20105693920]

約数ペア:

[(1, 20105693920), (2, 10052846960), (4, 5026423480), (5, 4021138784), (8, 2513211740), (10, 2010569392), (13, 1546591840), (16, 1256605870), (20, 1005284696), (26, 773295920), (32, 628302935), (40, 502642348), (52, 386647960), (65, 309318368), (80, 251321174), (104, 193323980), (130, 154659184), (139, 144645280), (160, 125660587), (197, 102059360), (208, 96661990), (260, 77329592), (278, 72322640), (353, 56956640), (394, 51029680), (416, 48330995), (520, 38664796), (556, 36161320), (695, 28929056), (706, 28478320), (788, 25514840), (985, 20411872), (1040, 19332398), (1112, 18080660), (1390, 14464528), (1412, 14239160), (1576, 12757420), (1765, 11391328), (1807, 11126560), (1970, 10205936), (2080, 9666199), (2224, 9040330), (2561, 7850720), (2780, 7232264), (2824, 7119580), (3152, 6378710), (3530, 5695664), (3614, 5563280), (3940, 5102968), (4448, 4520165), (4589, 4381280), (5122, 3925360), (5560, 3616132), (5648, 3559790), (6304, 3189355), (7060, 2847832), (7228, 2781640), (7880, 2551484), (9035, 2225312), (9178, 2190640), (10244, 1962680), (11120, 1808066), (11296, 1779895), (12805, 1570144), (14120, 1423916), (14456, 1390820), (15760, 1275742), (18070, 1112656), (18356, 1095320), (20488, 981340), (22240, 904033), (22945, 876256), (25610, 785072), (27383, 734240), (28240, 711958), (28912, 695410), (31520, 637871), (36140, 556328), (36712, 547660), (40976, 490670), (45890, 438128), (49067, 409760), (51220, 392536), (54766, 367120), (56480, 355979), (57824, 347705), (69541, 289120), (72280, 278164), (73424, 273830), (81952, 245335), (91780, 219064), (98134, 204880), (102440, 196268), (109532, 183560), (136915, 146848), (139082, 144560)]