818480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{787}}^1$

素因数の和:813

約数の個数: 40

約数和(自身を含む): 2051952

約数和(自身を除く): 1233472

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 787, 1040, 1574, 3148, 3935, 6296, 7870, 10231, 12592, 15740, 20462, 31480, 40924, 51155, 62960, 81848, 102310, 163696, 204620, 409240, 818480]

約数ペア:

[(1, 818480), (2, 409240), (4, 204620), (5, 163696), (8, 102310), (10, 81848), (13, 62960), (16, 51155), (20, 40924), (26, 31480), (40, 20462), (52, 15740), (65, 12592), (80, 10231), (104, 7870), (130, 6296), (208, 3935), (260, 3148), (520, 1574), (787, 1040)]