28157775

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{9157}}^1$

素因数の和:9211

約数の個数: 24

約数和(自身を含む): 47694864

約数和(自身を除く): 19537089

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 9157, 27471, 45785, 137355, 228925, 375437, 686775, 1126311, 1877185, 5631555, 9385925, 28157775]

約数ペア:

[(1, 28157775), (3, 9385925), (5, 5631555), (15, 1877185), (25, 1126311), (41, 686775), (75, 375437), (123, 228925), (205, 137355), (615, 45785), (1025, 27471), (3075, 9157)]