39885625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{4909}}^1$

素因数の和:4942

約数の個数: 20

約数和(自身を含む): 53685940

約数和(自身を除く): 13800315

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 4909, 8125, 24545, 63817, 122725, 319085, 613625, 1595425, 3068125, 7977125, 39885625]

約数ペア:

[(1, 39885625), (5, 7977125), (13, 3068125), (25, 1595425), (65, 613625), (125, 319085), (325, 122725), (625, 63817), (1625, 24545), (4909, 8125)]