51378860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2707}}^1$

素因数の和:2802

約数の個数: 48

約数和(自身を含む): 117830496

約数和(自身を除く): 66451636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1460, 1898, 2707, 3796, 4745, 5414, 9490, 10828, 13535, 18980, 27070, 35191, 54140, 70382, 140764, 175955, 197611, 351910, 395222, 703820, 790444, 988055, 1976110, 2568943, 3952220, 5137886, 10275772, 12844715, 25689430, 51378860]

約数ペア:

[(1, 51378860), (2, 25689430), (4, 12844715), (5, 10275772), (10, 5137886), (13, 3952220), (20, 2568943), (26, 1976110), (52, 988055), (65, 790444), (73, 703820), (130, 395222), (146, 351910), (260, 197611), (292, 175955), (365, 140764), (730, 70382), (949, 54140), (1460, 35191), (1898, 27070), (2707, 18980), (3796, 13535), (4745, 10828), (5414, 9490)]