18678790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2711}}^1$

素因数の和:2784

約数の個数: 32

約数和(自身を含む): 36904896

約数和(自身を除く): 18226106

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 265, 530, 689, 1378, 2711, 3445, 5422, 6890, 13555, 27110, 35243, 70486, 143683, 176215, 287366, 352430, 718415, 1436830, 1867879, 3735758, 9339395, 18678790]

約数ペア:

[(1, 18678790), (2, 9339395), (5, 3735758), (10, 1867879), (13, 1436830), (26, 718415), (53, 352430), (65, 287366), (106, 176215), (130, 143683), (265, 70486), (530, 35243), (689, 27110), (1378, 13555), (2711, 6890), (3445, 5422)]