20863420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61363}}^1$

素因数の和:61389

約数の個数: 24

約数和(自身を含む): 46391184

約数和(自身を除く): 25527764

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 61363, 122726, 245452, 306815, 613630, 1043171, 1227260, 2086342, 4172684, 5215855, 10431710, 20863420]

約数ペア:

[(1, 20863420), (2, 10431710), (4, 5215855), (5, 4172684), (10, 2086342), (17, 1227260), (20, 1043171), (34, 613630), (68, 306815), (85, 245452), (170, 122726), (340, 61363)]