664875

素因数分解:

$3^3\times 5^3\times {\mathrm{197}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 1235520

約数和(自身を除く): 570645

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 125, 135, 197, 225, 375, 591, 675, 985, 1125, 1773, 2955, 3375, 4925, 5319, 8865, 14775, 24625, 26595, 44325, 73875, 132975, 221625, 664875]

約数ペア:

[(1, 664875), (3, 221625), (5, 132975), (9, 73875), (15, 44325), (25, 26595), (27, 24625), (45, 14775), (75, 8865), (125, 5319), (135, 4925), (197, 3375), (225, 2955), (375, 1773), (591, 1125), (675, 985)]