409240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:811

約数の個数: 32

約数和(自身を含む): 992880

約数和(自身を除く): 583640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 787, 1574, 3148, 3935, 6296, 7870, 10231, 15740, 20462, 31480, 40924, 51155, 81848, 102310, 204620, 409240]

約数ペア:

[(1, 409240), (2, 204620), (4, 102310), (5, 81848), (8, 51155), (10, 40924), (13, 31480), (20, 20462), (26, 15740), (40, 10231), (52, 7870), (65, 6296), (104, 3935), (130, 3148), (260, 1574), (520, 787)]