388541140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{827}}^1$

素因数の和:1001

約数の個数: 72

約数和(自身を含む): 890961120

約数和(自身を除く): 502419980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 169, 260, 278, 338, 556, 676, 695, 827, 845, 1390, 1654, 1690, 1807, 2780, 3308, 3380, 3614, 4135, 7228, 8270, 9035, 10751, 16540, 18070, 21502, 23491, 36140, 43004, 46982, 53755, 93964, 107510, 114953, 117455, 139763, 215020, 229906, 234910, 279526, 459812, 469820, 559052, 574765, 698815, 1149530, 1397630, 1494389, 2299060, 2795260, 2988778, 5977556, 7471945, 14943890, 19427057, 29887780, 38854114, 77708228, 97135285, 194270570, 388541140]

約数ペア:

[(1, 388541140), (2, 194270570), (4, 97135285), (5, 77708228), (10, 38854114), (13, 29887780), (20, 19427057), (26, 14943890), (52, 7471945), (65, 5977556), (130, 2988778), (139, 2795260), (169, 2299060), (260, 1494389), (278, 1397630), (338, 1149530), (556, 698815), (676, 574765), (695, 559052), (827, 469820), (845, 459812), (1390, 279526), (1654, 234910), (1690, 229906), (1807, 215020), (2780, 139763), (3308, 117455), (3380, 114953), (3614, 107510), (4135, 93964), (7228, 53755), (8270, 46982), (9035, 43004), (10751, 36140), (16540, 23491), (18070, 21502)]