21778440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1871}}^1$

素因数の和:1982

約数の個数: 64

約数和(自身を含む): 66044160

約数和(自身を除く): 44265720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 97, 120, 194, 291, 388, 485, 582, 776, 970, 1164, 1455, 1871, 1940, 2328, 2910, 3742, 3880, 5613, 5820, 7484, 9355, 11226, 11640, 14968, 18710, 22452, 28065, 37420, 44904, 56130, 74840, 112260, 181487, 224520, 362974, 544461, 725948, 907435, 1088922, 1451896, 1814870, 2177844, 2722305, 3629740, 4355688, 5444610, 7259480, 10889220, 21778440]

約数ペア:

[(1, 21778440), (2, 10889220), (3, 7259480), (4, 5444610), (5, 4355688), (6, 3629740), (8, 2722305), (10, 2177844), (12, 1814870), (15, 1451896), (20, 1088922), (24, 907435), (30, 725948), (40, 544461), (60, 362974), (97, 224520), (120, 181487), (194, 112260), (291, 74840), (388, 56130), (485, 44904), (582, 37420), (776, 28065), (970, 22452), (1164, 18710), (1455, 14968), (1871, 11640), (1940, 11226), (2328, 9355), (2910, 7484), (3742, 5820), (3880, 5613)]