54978140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5531}}^1$

素因数の和:5618

約数の個数: 48

約数和(自身を含む): 133830144

約数和(自身を除く): 78852004

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 5531, 9940, 11062, 22124, 27655, 38717, 55310, 77434, 110620, 154868, 193585, 387170, 392701, 774340, 785402, 1570804, 1963505, 2748907, 3927010, 5497814, 7854020, 10995628, 13744535, 27489070, 54978140]

約数ペア:

[(1, 54978140), (2, 27489070), (4, 13744535), (5, 10995628), (7, 7854020), (10, 5497814), (14, 3927010), (20, 2748907), (28, 1963505), (35, 1570804), (70, 785402), (71, 774340), (140, 392701), (142, 387170), (284, 193585), (355, 154868), (497, 110620), (710, 77434), (994, 55310), (1420, 38717), (1988, 27655), (2485, 22124), (4970, 11062), (5531, 9940)]