21778125

素因数分解:

$3^1\times 5^5\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 38247552

約数和(自身を除く): 16469427

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 101, 115, 125, 303, 345, 375, 505, 575, 625, 1515, 1725, 1875, 2323, 2525, 2875, 3125, 6969, 7575, 8625, 9375, 11615, 12625, 14375, 34845, 37875, 43125, 58075, 63125, 71875, 174225, 189375, 215625, 290375, 315625, 871125, 946875, 1451875, 4355625, 7259375, 21778125]

約数ペア:

[(1, 21778125), (3, 7259375), (5, 4355625), (15, 1451875), (23, 946875), (25, 871125), (69, 315625), (75, 290375), (101, 215625), (115, 189375), (125, 174225), (303, 71875), (345, 63125), (375, 58075), (505, 43125), (575, 37875), (625, 34845), (1515, 14375), (1725, 12625), (1875, 11615), (2323, 9375), (2525, 8625), (2875, 7575), (3125, 6969)]