18949125

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^3\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 64

約数和(自身を含む): 35642880

約数和(自身を除く): 16693755

約数列:

[1, 3, 5, 13, 15, 23, 25, 39, 65, 69, 75, 115, 125, 169, 195, 299, 325, 345, 375, 507, 575, 845, 897, 975, 1495, 1625, 1725, 2197, 2535, 2875, 3887, 4225, 4485, 4875, 6591, 7475, 8625, 10985, 11661, 12675, 19435, 21125, 22425, 32955, 37375, 50531, 54925, 58305, 63375, 97175, 112125, 151593, 164775, 252655, 274625, 291525, 485875, 757965, 823875, 1263275, 1457625, 3789825, 6316375, 18949125]

約数ペア:

[(1, 18949125), (3, 6316375), (5, 3789825), (13, 1457625), (15, 1263275), (23, 823875), (25, 757965), (39, 485875), (65, 291525), (69, 274625), (75, 252655), (115, 164775), (125, 151593), (169, 112125), (195, 97175), (299, 63375), (325, 58305), (345, 54925), (375, 50531), (507, 37375), (575, 32955), (845, 22425), (897, 21125), (975, 19435), (1495, 12675), (1625, 11661), (1725, 10985), (2197, 8625), (2535, 7475), (2875, 6591), (3887, 4875), (4225, 4485)]