390975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:427

約数の個数: 24

約数和(自身を含む): 697872

約数和(自身を除く): 306897

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 401, 975, 1203, 2005, 5213, 6015, 10025, 15639, 26065, 30075, 78195, 130325, 390975]

約数ペア:

[(1, 390975), (3, 130325), (5, 78195), (13, 30075), (15, 26065), (25, 15639), (39, 10025), (65, 6015), (75, 5213), (195, 2005), (325, 1203), (401, 975)]