18628875

素因数分解:

$3^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 34800480

約数和(自身を除く): 16171605

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 125, 145, 225, 261, 375, 435, 571, 725, 1125, 1305, 1713, 2175, 2855, 3625, 5139, 6525, 8565, 10875, 14275, 16559, 25695, 32625, 42825, 49677, 71375, 82795, 128475, 149031, 214125, 248385, 413975, 642375, 745155, 1241925, 2069875, 3725775, 6209625, 18628875]

約数ペア:

[(1, 18628875), (3, 6209625), (5, 3725775), (9, 2069875), (15, 1241925), (25, 745155), (29, 642375), (45, 413975), (75, 248385), (87, 214125), (125, 149031), (145, 128475), (225, 82795), (261, 71375), (375, 49677), (435, 42825), (571, 32625), (725, 25695), (1125, 16559), (1305, 14275), (1713, 10875), (2175, 8565), (2855, 6525), (3625, 5139)]