21785960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2683}}^1$

素因数の和:2730

約数の個数: 64

約数和(自身を含む): 57974400

約数和(自身を除く): 36188440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2683, 4060, 5366, 8120, 10732, 13415, 18781, 21464, 26830, 37562, 53660, 75124, 77807, 93905, 107320, 150248, 155614, 187810, 311228, 375620, 389035, 544649, 622456, 751240, 778070, 1089298, 1556140, 2178596, 2723245, 3112280, 4357192, 5446490, 10892980, 21785960]

約数ペア:

[(1, 21785960), (2, 10892980), (4, 5446490), (5, 4357192), (7, 3112280), (8, 2723245), (10, 2178596), (14, 1556140), (20, 1089298), (28, 778070), (29, 751240), (35, 622456), (40, 544649), (56, 389035), (58, 375620), (70, 311228), (116, 187810), (140, 155614), (145, 150248), (203, 107320), (232, 93905), (280, 77807), (290, 75124), (406, 53660), (580, 37562), (812, 26830), (1015, 21464), (1160, 18781), (1624, 13415), (2030, 10732), (2683, 8120), (4060, 5366)]