27688225

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{821}}^1$

素因数の和:921

約数の個数: 24

約数和(自身を含む): 36694080

約数和(自身を除く): 9005855

約数列:

[1, 5, 19, 25, 71, 95, 355, 475, 821, 1349, 1775, 4105, 6745, 15599, 20525, 33725, 58291, 77995, 291455, 389975, 1107529, 1457275, 5537645, 27688225]

約数ペア:

[(1, 27688225), (5, 5537645), (19, 1457275), (25, 1107529), (71, 389975), (95, 291455), (355, 77995), (475, 58291), (821, 33725), (1349, 20525), (1775, 15599), (4105, 6745)]