28916420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{111217}}^1$

素因数の和:111239

約数の個数: 24

約数和(自身を含む): 65396184

約数和(自身を除く): 36479764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 111217, 222434, 444868, 556085, 1112170, 1445821, 2224340, 2891642, 5783284, 7229105, 14458210, 28916420]

約数ペア:

[(1, 28916420), (2, 14458210), (4, 7229105), (5, 5783284), (10, 2891642), (13, 2224340), (20, 1445821), (26, 1112170), (52, 556085), (65, 444868), (130, 222434), (260, 111217)]