20402935

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 29122560

約数和(自身を除く): 8719625

約数列:

[1, 5, 7, 35, 47, 79, 157, 235, 329, 395, 553, 785, 1099, 1645, 2765, 3713, 5495, 7379, 12403, 18565, 25991, 36895, 51653, 62015, 86821, 129955, 258265, 434105, 582941, 2914705, 4080587, 20402935]

約数ペア:

[(1, 20402935), (5, 4080587), (7, 2914705), (35, 582941), (47, 434105), (79, 258265), (157, 129955), (235, 86821), (329, 62015), (395, 51653), (553, 36895), (785, 25991), (1099, 18565), (1645, 12403), (2765, 7379), (3713, 5495)]