20769890

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 17799070

約数列:

[1, 2, 5, 10, 61, 79, 122, 158, 305, 395, 431, 610, 790, 862, 2155, 4310, 4819, 9638, 24095, 26291, 34049, 48190, 52582, 68098, 131455, 170245, 262910, 340490, 2076989, 4153978, 10384945, 20769890]

約数ペア:

[(1, 20769890), (2, 10384945), (5, 4153978), (10, 2076989), (61, 340490), (79, 262910), (122, 170245), (158, 131455), (305, 68098), (395, 52582), (431, 48190), (610, 34049), (790, 26291), (862, 24095), (2155, 9638), (4310, 4819)]