81751780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{1637}}^1$

素因数の和:1884

約数の個数: 48

約数和(自身を含む): 188225856

約数和(自身を除く): 106474076

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 227, 454, 908, 1135, 1637, 2270, 2497, 3274, 4540, 4994, 6548, 8185, 9988, 12485, 16370, 18007, 24970, 32740, 36014, 49940, 72028, 90035, 180070, 360140, 371599, 743198, 1486396, 1857995, 3715990, 4087589, 7431980, 8175178, 16350356, 20437945, 40875890, 81751780]

約数ペア:

[(1, 81751780), (2, 40875890), (4, 20437945), (5, 16350356), (10, 8175178), (11, 7431980), (20, 4087589), (22, 3715990), (44, 1857995), (55, 1486396), (110, 743198), (220, 371599), (227, 360140), (454, 180070), (908, 90035), (1135, 72028), (1637, 49940), (2270, 36014), (2497, 32740), (3274, 24970), (4540, 18007), (4994, 16370), (6548, 12485), (8185, 9988)]