31989225

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 55246464

約数和(自身を除く): 23257239

約数列:

[1, 3, 5, 15, 25, 41, 75, 101, 103, 123, 205, 303, 309, 505, 515, 615, 1025, 1515, 1545, 2525, 2575, 3075, 4141, 4223, 7575, 7725, 10403, 12423, 12669, 20705, 21115, 31209, 52015, 62115, 63345, 103525, 105575, 156045, 260075, 310575, 316725, 426523, 780225, 1279569, 2132615, 6397845, 10663075, 31989225]

約数ペア:

[(1, 31989225), (3, 10663075), (5, 6397845), (15, 2132615), (25, 1279569), (41, 780225), (75, 426523), (101, 316725), (103, 310575), (123, 260075), (205, 156045), (303, 105575), (309, 103525), (505, 63345), (515, 62115), (615, 52015), (1025, 31209), (1515, 21115), (1545, 20705), (2525, 12669), (2575, 12423), (3075, 10403), (4141, 7725), (4223, 7575)]