405707939

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 510706560

約数和(自身を除く): 104998621

約数列:

[1, 7, 13, 73, 91, 157, 389, 511, 949, 1099, 2041, 2723, 5057, 6643, 11461, 14287, 28397, 35399, 61073, 80227, 148993, 198779, 369161, 427511, 793949, 1042951, 2584127, 4458329, 5557643, 31208303, 57958277, 405707939]

約数ペア:

[(1, 405707939), (7, 57958277), (13, 31208303), (73, 5557643), (91, 4458329), (157, 2584127), (389, 1042951), (511, 793949), (949, 427511), (1099, 369161), (2041, 198779), (2723, 148993), (5057, 80227), (6643, 61073), (11461, 35399), (14287, 28397)]