398925

素因数分解:

$3^4\times 5^2\times {\mathrm{197}}^1$

素因数の和:219

約数の個数: 30

約数和(自身を含む): 742698

約数和(自身を除く): 343773

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 197, 225, 405, 591, 675, 985, 1773, 2025, 2955, 4925, 5319, 8865, 14775, 15957, 26595, 44325, 79785, 132975, 398925]

約数ペア:

[(1, 398925), (3, 132975), (5, 79785), (9, 44325), (15, 26595), (25, 15957), (27, 14775), (45, 8865), (75, 5319), (81, 4925), (135, 2955), (197, 2025), (225, 1773), (405, 985), (591, 675)]