15980775

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{5197}}^1$

素因数の和:5251

約数の個数: 24

約数和(自身を含む): 27071184

約数和(自身を除く): 11090409

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 5197, 15591, 25985, 77955, 129925, 213077, 389775, 639231, 1065385, 3196155, 5326925, 15980775]

約数ペア:

[(1, 15980775), (3, 5326925), (5, 3196155), (15, 1065385), (25, 639231), (41, 389775), (75, 213077), (123, 129925), (205, 77955), (615, 25985), (1025, 15591), (3075, 5197)]