21735430

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{823}}^1$

素因数の和:988

約数の個数: 32

約数和(自身を含む): 41529600

約数和(自身を除く): 19794170

約数列:

[1, 2, 5, 10, 19, 38, 95, 139, 190, 278, 695, 823, 1390, 1646, 2641, 4115, 5282, 8230, 13205, 15637, 26410, 31274, 78185, 114397, 156370, 228794, 571985, 1143970, 2173543, 4347086, 10867715, 21735430]

約数ペア:

[(1, 21735430), (2, 10867715), (5, 4347086), (10, 2173543), (19, 1143970), (38, 571985), (95, 228794), (139, 156370), (190, 114397), (278, 78185), (695, 31274), (823, 26410), (1390, 15637), (1646, 13205), (2641, 8230), (4115, 5282)]