21529640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{293}}^1$

素因数の和:482

約数の個数: 64

約数和(自身を含む): 53343360

約数和(自身を除く): 31813720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 167, 220, 293, 334, 440, 586, 668, 835, 1172, 1336, 1465, 1670, 1837, 2344, 2930, 3223, 3340, 3674, 5860, 6446, 6680, 7348, 9185, 11720, 12892, 14696, 16115, 18370, 25784, 32230, 36740, 48931, 64460, 73480, 97862, 128920, 195724, 244655, 391448, 489310, 538241, 978620, 1076482, 1957240, 2152964, 2691205, 4305928, 5382410, 10764820, 21529640]

約数ペア:

[(1, 21529640), (2, 10764820), (4, 5382410), (5, 4305928), (8, 2691205), (10, 2152964), (11, 1957240), (20, 1076482), (22, 978620), (40, 538241), (44, 489310), (55, 391448), (88, 244655), (110, 195724), (167, 128920), (220, 97862), (293, 73480), (334, 64460), (440, 48931), (586, 36740), (668, 32230), (835, 25784), (1172, 18370), (1336, 16115), (1465, 14696), (1670, 12892), (1837, 11720), (2344, 9185), (2930, 7348), (3223, 6680), (3340, 6446), (3674, 5860)]