90810625

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:203

約数の個数: 40

約数和(自身を含む): 120961280

約数和(自身を除く): 30150655

約数列:

[1, 5, 25, 31, 43, 109, 125, 155, 215, 545, 625, 775, 1075, 1333, 2725, 3379, 3875, 4687, 5375, 6665, 13625, 16895, 19375, 23435, 26875, 33325, 68125, 84475, 117175, 145297, 166625, 422375, 585875, 726485, 833125, 2111875, 2929375, 3632425, 18162125, 90810625]

約数ペア:

[(1, 90810625), (5, 18162125), (25, 3632425), (31, 2929375), (43, 2111875), (109, 833125), (125, 726485), (155, 585875), (215, 422375), (545, 166625), (625, 145297), (775, 117175), (1075, 84475), (1333, 68125), (2725, 33325), (3379, 26875), (3875, 23435), (4687, 19375), (5375, 16895), (6665, 13625)]