81159980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{12721}}^1$

素因数の和:12770

約数の個数: 48

約数和(自身を含む): 192356640

約数和(自身を除く): 111196660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 3190, 6380, 12721, 25442, 50884, 63605, 127210, 139931, 254420, 279862, 368909, 559724, 699655, 737818, 1399310, 1475636, 1844545, 2798620, 3689090, 4057999, 7378180, 8115998, 16231996, 20289995, 40579990, 81159980]

約数ペア:

[(1, 81159980), (2, 40579990), (4, 20289995), (5, 16231996), (10, 8115998), (11, 7378180), (20, 4057999), (22, 3689090), (29, 2798620), (44, 1844545), (55, 1475636), (58, 1399310), (110, 737818), (116, 699655), (145, 559724), (220, 368909), (290, 279862), (319, 254420), (580, 139931), (638, 127210), (1276, 63605), (1595, 50884), (3190, 25442), (6380, 12721)]