289900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1$

素因数の和:250

約数の個数: 36

約数和(自身を含む): 680512

約数和(自身を除く): 390612

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 223, 260, 325, 446, 650, 892, 1115, 1300, 2230, 2899, 4460, 5575, 5798, 11150, 11596, 14495, 22300, 28990, 57980, 72475, 144950, 289900]

約数ペア:

[(1, 289900), (2, 144950), (4, 72475), (5, 57980), (10, 28990), (13, 22300), (20, 14495), (25, 11596), (26, 11150), (50, 5798), (52, 5575), (65, 4460), (100, 2899), (130, 2230), (223, 1300), (260, 1115), (325, 892), (446, 650)]