25502840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 63180000

約数和(自身を除く): 37677160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 149, 220, 298, 389, 440, 596, 745, 778, 1192, 1490, 1556, 1639, 1945, 2980, 3112, 3278, 3890, 4279, 5960, 6556, 7780, 8195, 8558, 13112, 15560, 16390, 17116, 21395, 32780, 34232, 42790, 57961, 65560, 85580, 115922, 171160, 231844, 289805, 463688, 579610, 637571, 1159220, 1275142, 2318440, 2550284, 3187855, 5100568, 6375710, 12751420, 25502840]

約数ペア:

[(1, 25502840), (2, 12751420), (4, 6375710), (5, 5100568), (8, 3187855), (10, 2550284), (11, 2318440), (20, 1275142), (22, 1159220), (40, 637571), (44, 579610), (55, 463688), (88, 289805), (110, 231844), (149, 171160), (220, 115922), (298, 85580), (389, 65560), (440, 57961), (596, 42790), (745, 34232), (778, 32780), (1192, 21395), (1490, 17116), (1556, 16390), (1639, 15560), (1945, 13112), (2980, 8558), (3112, 8195), (3278, 7780), (3890, 6556), (4279, 5960)]