21002930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161561}}^1$

素因数の和:161581

約数の個数: 16

約数和(自身を含む): 40713624

約数和(自身を除く): 19710694

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161561, 323122, 807805, 1615610, 2100293, 4200586, 10501465, 21002930]

約数ペア:

[(1, 21002930), (2, 10501465), (5, 4200586), (10, 2100293), (13, 1615610), (26, 807805), (65, 323122), (130, 161561)]