201221520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:513

約数の個数: 160

約数和(自身を含む): 666921600

約数和(自身を除く): 465700080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 149, 170, 204, 240, 255, 272, 298, 331, 340, 408, 447, 510, 596, 662, 680, 745, 816, 894, 993, 1020, 1192, 1324, 1360, 1490, 1655, 1788, 1986, 2040, 2235, 2384, 2533, 2648, 2980, 3310, 3576, 3972, 4080, 4470, 4965, 5066, 5296, 5627, 5960, 6620, 7152, 7599, 7944, 8940, 9930, 10132, 11254, 11920, 12665, 13240, 15198, 15888, 16881, 17880, 19860, 20264, 22508, 25330, 26480, 28135, 30396, 33762, 35760, 37995, 39720, 40528, 45016, 49319, 50660, 56270, 60792, 67524, 75990, 79440, 84405, 90032, 98638, 101320, 112540, 121584, 135048, 147957, 151980, 168810, 197276, 202640, 225080, 246595, 270096, 295914, 303960, 337620, 394552, 450160, 493190, 591828, 607920, 675240, 739785, 789104, 838423, 986380, 1183656, 1350480, 1479570, 1676846, 1972760, 2367312, 2515269, 2959140, 3353692, 3945520, 4192115, 5030538, 5918280, 6707384, 8384230, 10061076, 11836560, 12576345, 13414768, 16768460, 20122152, 25152690, 33536920, 40244304, 50305380, 67073840, 100610760, 201221520]

約数ペア:

[(1, 201221520), (2, 100610760), (3, 67073840), (4, 50305380), (5, 40244304), (6, 33536920), (8, 25152690), (10, 20122152), (12, 16768460), (15, 13414768), (16, 12576345), (17, 11836560), (20, 10061076), (24, 8384230), (30, 6707384), (34, 5918280), (40, 5030538), (48, 4192115), (51, 3945520), (60, 3353692), (68, 2959140), (80, 2515269), (85, 2367312), (102, 1972760), (120, 1676846), (136, 1479570), (149, 1350480), (170, 1183656), (204, 986380), (240, 838423), (255, 789104), (272, 739785), (298, 675240), (331, 607920), (340, 591828), (408, 493190), (447, 450160), (510, 394552), (596, 337620), (662, 303960), (680, 295914), (745, 270096), (816, 246595), (894, 225080), (993, 202640), (1020, 197276), (1192, 168810), (1324, 151980), (1360, 147957), (1490, 135048), (1655, 121584), (1788, 112540), (1986, 101320), (2040, 98638), (2235, 90032), (2384, 84405), (2533, 79440), (2648, 75990), (2980, 67524), (3310, 60792), (3576, 56270), (3972, 50660), (4080, 49319), (4470, 45016), (4965, 40528), (5066, 39720), (5296, 37995), (5627, 35760), (5960, 33762), (6620, 30396), (7152, 28135), (7599, 26480), (7944, 25330), (8940, 22508), (9930, 20264), (10132, 19860), (11254, 17880), (11920, 16881), (12665, 15888), (13240, 15198)]