20197125

素因数分解:

$3^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1381}}^1$

素因数の和:1415

約数の個数: 48

約数和(自身を含む): 39237744

約数和(自身を除く): 19040619

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 125, 195, 225, 325, 375, 585, 975, 1125, 1381, 1625, 2925, 4143, 4875, 6905, 12429, 14625, 17953, 20715, 34525, 53859, 62145, 89765, 103575, 161577, 172625, 269295, 310725, 448825, 517875, 807885, 1346475, 1553625, 2244125, 4039425, 6732375, 20197125]

約数ペア:

[(1, 20197125), (3, 6732375), (5, 4039425), (9, 2244125), (13, 1553625), (15, 1346475), (25, 807885), (39, 517875), (45, 448825), (65, 310725), (75, 269295), (117, 172625), (125, 161577), (195, 103575), (225, 89765), (325, 62145), (375, 53859), (585, 34525), (975, 20715), (1125, 17953), (1381, 14625), (1625, 12429), (2925, 6905), (4143, 4875)]