20219380

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:600

約数の個数: 48

約数和(自身を含む): 44634240

約数和(自身を除く): 24414860

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 284, 290, 355, 491, 580, 710, 982, 1420, 1964, 2059, 2455, 4118, 4910, 8236, 9820, 10295, 14239, 20590, 28478, 34861, 41180, 56956, 69722, 71195, 139444, 142390, 174305, 284780, 348610, 697220, 1010969, 2021938, 4043876, 5054845, 10109690, 20219380]

約数ペア:

[(1, 20219380), (2, 10109690), (4, 5054845), (5, 4043876), (10, 2021938), (20, 1010969), (29, 697220), (58, 348610), (71, 284780), (116, 174305), (142, 142390), (145, 139444), (284, 71195), (290, 69722), (355, 56956), (491, 41180), (580, 34861), (710, 28478), (982, 20590), (1420, 14239), (1964, 10295), (2059, 9820), (2455, 8236), (4118, 4910)]