20902125

素因数分解:

$3^1\times 5^3\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 35118720

約数和(自身を除く): 14216595

約数列:

[1, 3, 5, 15, 25, 75, 125, 139, 375, 401, 417, 695, 1203, 2005, 2085, 3475, 6015, 10025, 10425, 17375, 30075, 50125, 52125, 55739, 150375, 167217, 278695, 836085, 1393475, 4180425, 6967375, 20902125]

約数ペア:

[(1, 20902125), (3, 6967375), (5, 4180425), (15, 1393475), (25, 836085), (75, 278695), (125, 167217), (139, 150375), (375, 55739), (401, 52125), (417, 50125), (695, 30075), (1203, 17375), (2005, 10425), (2085, 10025), (3475, 6015)]