15980325

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3001}}^1$

素因数の和:3085

約数の個数: 24

約数和(自身を含む): 26801856

約数和(自身を除く): 10821531

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3001, 5325, 9003, 15005, 45015, 75025, 213071, 225075, 639213, 1065355, 3196065, 5326775, 15980325]

約数ペア:

[(1, 15980325), (3, 5326775), (5, 3196065), (15, 1065355), (25, 639213), (71, 225075), (75, 213071), (213, 75025), (355, 45015), (1065, 15005), (1775, 9003), (3001, 5325)]