2580040

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1217}}^1$

素因数の和:1281

約数の個数: 32

約数和(自身を含む): 5919480

約数和(自身を除く): 3339440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 1217, 2120, 2434, 4868, 6085, 9736, 12170, 24340, 48680, 64501, 129002, 258004, 322505, 516008, 645010, 1290020, 2580040]

約数ペア:

[(1, 2580040), (2, 1290020), (4, 645010), (5, 516008), (8, 322505), (10, 258004), (20, 129002), (40, 64501), (53, 48680), (106, 24340), (212, 12170), (265, 9736), (424, 6085), (530, 4868), (1060, 2434), (1217, 2120)]