388949360

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{68477}}^1$

素因数の和:68561

約数の個数: 40

約数和(自身を含む): 917057376

約数和(自身を除く): 528108016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 68477, 136954, 273908, 342385, 547816, 684770, 1095632, 1369540, 2739080, 4861867, 5478160, 9723734, 19447468, 24309335, 38894936, 48618670, 77789872, 97237340, 194474680, 388949360]

約数ペア:

[(1, 388949360), (2, 194474680), (4, 97237340), (5, 77789872), (8, 48618670), (10, 38894936), (16, 24309335), (20, 19447468), (40, 9723734), (71, 5478160), (80, 4861867), (142, 2739080), (284, 1369540), (355, 1095632), (568, 684770), (710, 547816), (1136, 342385), (1420, 273908), (2840, 136954), (5680, 68477)]