18946875

素因数分解:

$3^1\times 5^5\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:118

約数の個数: 48

約数和(自身を含む): 32997888

約数和(自身を除く): 14051013

約数列:

[1, 3, 5, 15, 25, 43, 47, 75, 125, 129, 141, 215, 235, 375, 625, 645, 705, 1075, 1175, 1875, 2021, 3125, 3225, 3525, 5375, 5875, 6063, 9375, 10105, 16125, 17625, 26875, 29375, 30315, 50525, 80625, 88125, 134375, 146875, 151575, 252625, 403125, 440625, 757875, 1263125, 3789375, 6315625, 18946875]

約数ペア:

[(1, 18946875), (3, 6315625), (5, 3789375), (15, 1263125), (25, 757875), (43, 440625), (47, 403125), (75, 252625), (125, 151575), (129, 146875), (141, 134375), (215, 88125), (235, 80625), (375, 50525), (625, 30315), (645, 29375), (705, 26875), (1075, 17625), (1175, 16125), (1875, 10105), (2021, 9375), (3125, 6063), (3225, 5875), (3525, 5375)]