20002190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{613}}^1$

素因数の和:884

約数の個数: 32

約数和(自身を含む): 38991456

約数和(自身を除く): 18989266

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 251, 502, 613, 1226, 1255, 2510, 3065, 3263, 6130, 6526, 7969, 15938, 16315, 32630, 39845, 79690, 153863, 307726, 769315, 1538630, 2000219, 4000438, 10001095, 20002190]

約数ペア:

[(1, 20002190), (2, 10001095), (5, 4000438), (10, 2000219), (13, 1538630), (26, 769315), (65, 307726), (130, 153863), (251, 79690), (502, 39845), (613, 32630), (1226, 16315), (1255, 15938), (2510, 7969), (3065, 6526), (3263, 6130)]