28070380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1009}}^1$

素因数の和:1138

約数の個数: 48

約数和(自身を含む): 64139040

約数和(自身を除く): 36068660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 535, 1009, 1070, 1391, 2018, 2140, 2782, 4036, 5045, 5564, 6955, 10090, 13117, 13910, 20180, 26234, 27820, 52468, 65585, 107963, 131170, 215926, 262340, 431852, 539815, 1079630, 1403519, 2159260, 2807038, 5614076, 7017595, 14035190, 28070380]

約数ペア:

[(1, 28070380), (2, 14035190), (4, 7017595), (5, 5614076), (10, 2807038), (13, 2159260), (20, 1403519), (26, 1079630), (52, 539815), (65, 431852), (107, 262340), (130, 215926), (214, 131170), (260, 107963), (428, 65585), (535, 52468), (1009, 27820), (1070, 26234), (1391, 20180), (2018, 13910), (2140, 13117), (2782, 10090), (4036, 6955), (5045, 5564)]