723125

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:122

約数の個数: 20

約数和(自身を含む): 984060

約数和(自身を除く): 260935

約数列:

[1, 5, 13, 25, 65, 89, 125, 325, 445, 625, 1157, 1625, 2225, 5785, 8125, 11125, 28925, 55625, 144625, 723125]

約数ペア:

[(1, 723125), (5, 144625), (13, 55625), (25, 28925), (65, 11125), (89, 8125), (125, 5785), (325, 2225), (445, 1625), (625, 1157)]