81389660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{12757}}^1$

素因数の和:12806

約数の個数: 48

約数和(自身を含む): 192900960

約数和(自身を除く): 111511300

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, 12757, 25514, 51028, 63785, 127570, 140327, 255140, 280654, 369953, 561308, 701635, 739906, 1403270, 1479812, 1849765, 2806540, 3699530, 4069483, 7399060, 8138966, 16277932, 20347415, 40694830, 81389660]

約数ペア:

[(1, 81389660), (2, 40694830), (4, 20347415), (5, 16277932), (10, 8138966), (11, 7399060), (20, 4069483), (22, 3699530), (29, 2806540), (44, 1849765), (55, 1479812), (58, 1403270), (110, 739906), (116, 701635), (145, 561308), (220, 369953), (290, 280654), (319, 255140), (580, 140327), (638, 127570), (1276, 63785), (1595, 51028), (3190, 25514), (6380, 12757)]