18750820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2939}}^1$

素因数の和:2988

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 25701980

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, 2939, 3190, 5878, 6380, 11756, 14695, 29390, 32329, 58780, 64658, 85231, 129316, 161645, 170462, 323290, 340924, 426155, 646580, 852310, 937541, 1704620, 1875082, 3750164, 4687705, 9375410, 18750820]

約数ペア:

[(1, 18750820), (2, 9375410), (4, 4687705), (5, 3750164), (10, 1875082), (11, 1704620), (20, 937541), (22, 852310), (29, 646580), (44, 426155), (55, 340924), (58, 323290), (110, 170462), (116, 161645), (145, 129316), (220, 85231), (290, 64658), (319, 58780), (580, 32329), (638, 29390), (1276, 14695), (1595, 11756), (2939, 6380), (3190, 5878)]