20156568125

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{1040339}}^1$

素因数の和:1040390

約数の個数: 20

約数和(自身を含む): 26000177280

約数和(自身を除く): 5843609155

約数列:

[1, 5, 25, 31, 125, 155, 625, 775, 3875, 19375, 1040339, 5201695, 26008475, 32250509, 130042375, 161252545, 650211875, 806262725, 4031313625, 20156568125]

約数ペア:

[(1, 20156568125), (5, 4031313625), (25, 806262725), (31, 650211875), (125, 161252545), (155, 130042375), (625, 32250509), (775, 26008475), (3875, 5201695), (19375, 1040339)]