20098125

素因数分解:

$3^4\times 5^4\times {\mathrm{397}}^1$

素因数の和:429

約数の個数: 50

約数和(自身を含む): 37611398

約数和(自身を除く): 17513273

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 397, 405, 625, 675, 1125, 1191, 1875, 1985, 2025, 3375, 3573, 5625, 5955, 9925, 10125, 10719, 16875, 17865, 29775, 32157, 49625, 50625, 53595, 89325, 148875, 160785, 248125, 267975, 446625, 744375, 803925, 1339875, 2233125, 4019625, 6699375, 20098125]

約数ペア:

[(1, 20098125), (3, 6699375), (5, 4019625), (9, 2233125), (15, 1339875), (25, 803925), (27, 744375), (45, 446625), (75, 267975), (81, 248125), (125, 160785), (135, 148875), (225, 89325), (375, 53595), (397, 50625), (405, 49625), (625, 32157), (675, 29775), (1125, 17865), (1191, 16875), (1875, 10719), (1985, 10125), (2025, 9925), (3375, 5955), (3573, 5625)]