280691710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{40739}}^1$

素因数の和:40812

約数の個数: 32

約数和(自身を含む): 554389920

約数和(自身を除く): 273698210

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 3445, 6890, 40739, 81478, 203695, 407390, 529607, 1059214, 2159167, 2648035, 4318334, 5296070, 10795835, 21591670, 28069171, 56138342, 140345855, 280691710]

約数ペア:

[(1, 280691710), (2, 140345855), (5, 56138342), (10, 28069171), (13, 21591670), (26, 10795835), (53, 5296070), (65, 4318334), (106, 2648035), (130, 2159167), (265, 1059214), (530, 529607), (689, 407390), (1378, 203695), (3445, 81478), (6890, 40739)]