51643540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{647}}^1$

素因数の和:976

約数の個数: 48

約数和(自身を含む): 117355392

約数和(自身を除く): 65711852

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 307, 614, 647, 1228, 1294, 1535, 2588, 3070, 3235, 3991, 6140, 6470, 7982, 8411, 12940, 15964, 16822, 19955, 33644, 39910, 42055, 79820, 84110, 168220, 198629, 397258, 794516, 993145, 1986290, 2582177, 3972580, 5164354, 10328708, 12910885, 25821770, 51643540]

約数ペア:

[(1, 51643540), (2, 25821770), (4, 12910885), (5, 10328708), (10, 5164354), (13, 3972580), (20, 2582177), (26, 1986290), (52, 993145), (65, 794516), (130, 397258), (260, 198629), (307, 168220), (614, 84110), (647, 79820), (1228, 42055), (1294, 39910), (1535, 33644), (2588, 19955), (3070, 16822), (3235, 15964), (3991, 12940), (6140, 8411), (6470, 7982)]