131178580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{1297}}^1$

素因数の和:1708

約数の個数: 48

約数和(自身を含む): 297657360

約数和(自身を除く): 166478780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 389, 778, 1297, 1556, 1945, 2594, 3890, 5057, 5188, 6485, 7780, 10114, 12970, 16861, 20228, 25285, 25940, 33722, 50570, 67444, 84305, 101140, 168610, 337220, 504533, 1009066, 2018132, 2522665, 5045330, 6558929, 10090660, 13117858, 26235716, 32794645, 65589290, 131178580]

約数ペア:

[(1, 131178580), (2, 65589290), (4, 32794645), (5, 26235716), (10, 13117858), (13, 10090660), (20, 6558929), (26, 5045330), (52, 2522665), (65, 2018132), (130, 1009066), (260, 504533), (389, 337220), (778, 168610), (1297, 101140), (1556, 84305), (1945, 67444), (2594, 50570), (3890, 33722), (5057, 25940), (5188, 25285), (6485, 20228), (7780, 16861), (10114, 12970)]