2219375

素因数分解:

$5^4\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 20

約数和(自身を含む): 2867832

約数和(自身を除く): 648457

約数列:

[1, 5, 25, 53, 67, 125, 265, 335, 625, 1325, 1675, 3551, 6625, 8375, 17755, 33125, 41875, 88775, 443875, 2219375]

約数ペア:

[(1, 2219375), (5, 443875), (25, 88775), (53, 41875), (67, 33125), (125, 17755), (265, 8375), (335, 6625), (625, 3551), (1325, 1675)]