81269375

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{11821}}^1$

素因数の和:11852

約数の個数: 20

約数和(自身を含む): 110795784

約数和(自身を除く): 29526409

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 6875, 11821, 59105, 130031, 295525, 650155, 1477625, 3250775, 7388125, 16253875, 81269375]

約数ペア:

[(1, 81269375), (5, 16253875), (11, 7388125), (25, 3250775), (55, 1477625), (125, 650155), (275, 295525), (625, 130031), (1375, 59105), (6875, 11821)]