20194875

素因数分解:

$3^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:669

約数の個数: 48

約数和(自身を含む): 37720800

約数和(自身を除く): 17525925

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 125, 145, 225, 261, 375, 435, 619, 725, 1125, 1305, 1857, 2175, 3095, 3625, 5571, 6525, 9285, 10875, 15475, 17951, 27855, 32625, 46425, 53853, 77375, 89755, 139275, 161559, 232125, 269265, 448775, 696375, 807795, 1346325, 2243875, 4038975, 6731625, 20194875]

約数ペア:

[(1, 20194875), (3, 6731625), (5, 4038975), (9, 2243875), (15, 1346325), (25, 807795), (29, 696375), (45, 448775), (75, 269265), (87, 232125), (125, 161559), (145, 139275), (225, 89755), (261, 77375), (375, 53853), (435, 46425), (619, 32625), (725, 27855), (1125, 17951), (1305, 15475), (1857, 10875), (2175, 9285), (3095, 6525), (3625, 5571)]