81989780

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{1097}}^1$

素因数の和:1244

約数の個数: 48

約数和(自身を含む): 178745616

約数和(自身を除く): 96755836

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 101, 148, 185, 202, 370, 404, 505, 740, 1010, 1097, 2020, 2194, 3737, 4388, 5485, 7474, 10970, 14948, 18685, 21940, 37370, 40589, 74740, 81178, 110797, 162356, 202945, 221594, 405890, 443188, 553985, 811780, 1107970, 2215940, 4099489, 8198978, 16397956, 20497445, 40994890, 81989780]

約数ペア:

[(1, 81989780), (2, 40994890), (4, 20497445), (5, 16397956), (10, 8198978), (20, 4099489), (37, 2215940), (74, 1107970), (101, 811780), (148, 553985), (185, 443188), (202, 405890), (370, 221594), (404, 202945), (505, 162356), (740, 110797), (1010, 81178), (1097, 74740), (2020, 40589), (2194, 37370), (3737, 21940), (4388, 18685), (5485, 14948), (7474, 10970)]