21475845

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{419}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 40098240

約数和(自身を除く): 18622395

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 67, 85, 153, 201, 255, 335, 419, 603, 765, 1005, 1139, 1257, 2095, 3015, 3417, 3771, 5695, 6285, 7123, 10251, 17085, 18855, 21369, 28073, 35615, 51255, 64107, 84219, 106845, 140365, 252657, 320535, 421095, 477241, 1263285, 1431723, 2386205, 4295169, 7158615, 21475845]

約数ペア:

[(1, 21475845), (3, 7158615), (5, 4295169), (9, 2386205), (15, 1431723), (17, 1263285), (45, 477241), (51, 421095), (67, 320535), (85, 252657), (153, 140365), (201, 106845), (255, 84219), (335, 64107), (419, 51255), (603, 35615), (765, 28073), (1005, 21369), (1139, 18855), (1257, 17085), (2095, 10251), (3015, 7123), (3417, 6285), (3771, 5695)]