21571920

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{3329}}^1$

素因数の和:3354

約数の個数: 100

約数和(自身を含む): 74944980

約数和(自身を除く): 53373060

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 270, 324, 360, 405, 432, 540, 648, 720, 810, 1080, 1296, 1620, 2160, 3240, 3329, 6480, 6658, 9987, 13316, 16645, 19974, 26632, 29961, 33290, 39948, 49935, 53264, 59922, 66580, 79896, 89883, 99870, 119844, 133160, 149805, 159792, 179766, 199740, 239688, 266320, 269649, 299610, 359532, 399480, 449415, 479376, 539298, 599220, 719064, 798960, 898830, 1078596, 1198440, 1348245, 1438128, 1797660, 2157192, 2396880, 2696490, 3595320, 4314384, 5392980, 7190640, 10785960, 21571920]

約数ペア:

[(1, 21571920), (2, 10785960), (3, 7190640), (4, 5392980), (5, 4314384), (6, 3595320), (8, 2696490), (9, 2396880), (10, 2157192), (12, 1797660), (15, 1438128), (16, 1348245), (18, 1198440), (20, 1078596), (24, 898830), (27, 798960), (30, 719064), (36, 599220), (40, 539298), (45, 479376), (48, 449415), (54, 399480), (60, 359532), (72, 299610), (80, 269649), (81, 266320), (90, 239688), (108, 199740), (120, 179766), (135, 159792), (144, 149805), (162, 133160), (180, 119844), (216, 99870), (240, 89883), (270, 79896), (324, 66580), (360, 59922), (405, 53264), (432, 49935), (540, 39948), (648, 33290), (720, 29961), (810, 26632), (1080, 19974), (1296, 16645), (1620, 13316), (2160, 9987), (3240, 6658), (3329, 6480)]