12478840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{359}}^1$

素因数の和:460

約数の個数: 64

約数和(自身を含む): 31104000

約数和(自身を除く): 18625160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 158, 220, 316, 359, 395, 440, 632, 718, 790, 869, 1436, 1580, 1738, 1795, 2872, 3160, 3476, 3590, 3949, 4345, 6952, 7180, 7898, 8690, 14360, 15796, 17380, 19745, 28361, 31592, 34760, 39490, 56722, 78980, 113444, 141805, 157960, 226888, 283610, 311971, 567220, 623942, 1134440, 1247884, 1559855, 2495768, 3119710, 6239420, 12478840]

約数ペア:

[(1, 12478840), (2, 6239420), (4, 3119710), (5, 2495768), (8, 1559855), (10, 1247884), (11, 1134440), (20, 623942), (22, 567220), (40, 311971), (44, 283610), (55, 226888), (79, 157960), (88, 141805), (110, 113444), (158, 78980), (220, 56722), (316, 39490), (359, 34760), (395, 31592), (440, 28361), (632, 19745), (718, 17380), (790, 15796), (869, 14360), (1436, 8690), (1580, 7898), (1738, 7180), (1795, 6952), (2872, 4345), (3160, 3949), (3476, 3590)]