646875

素因数分解:

$3^2\times 5^5\times {\mathrm{23}}^1$

素因数の和:54

約数の個数: 36

約数和(自身を含む): 1218672

約数和(自身を除く): 571797

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 125, 207, 225, 345, 375, 575, 625, 1035, 1125, 1725, 1875, 2875, 3125, 5175, 5625, 8625, 9375, 14375, 25875, 28125, 43125, 71875, 129375, 215625, 646875]

約数ペア:

[(1, 646875), (3, 215625), (5, 129375), (9, 71875), (15, 43125), (23, 28125), (25, 25875), (45, 14375), (69, 9375), (75, 8625), (115, 5625), (125, 5175), (207, 3125), (225, 2875), (345, 1875), (375, 1725), (575, 1125), (625, 1035)]