20494425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{379}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 39203840

約数和(自身を除く): 18709415

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 103, 105, 175, 309, 379, 515, 525, 721, 1137, 1545, 1895, 2163, 2575, 2653, 3605, 5685, 7725, 7959, 9475, 10815, 13265, 18025, 28425, 39037, 39795, 54075, 66325, 117111, 195185, 198975, 273259, 585555, 819777, 975925, 1366295, 2927775, 4098885, 6831475, 20494425]

約数ペア:

[(1, 20494425), (3, 6831475), (5, 4098885), (7, 2927775), (15, 1366295), (21, 975925), (25, 819777), (35, 585555), (75, 273259), (103, 198975), (105, 195185), (175, 117111), (309, 66325), (379, 54075), (515, 39795), (525, 39037), (721, 28425), (1137, 18025), (1545, 13265), (1895, 10815), (2163, 9475), (2575, 7959), (2653, 7725), (3605, 5685)]