278597930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{947}}^1$

素因数の和:1071

約数の個数: 64

約数和(自身を含む): 565705728

約数和(自身を除く): 287107798

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 73, 130, 146, 155, 310, 365, 403, 730, 806, 947, 949, 1894, 1898, 2015, 2263, 4030, 4526, 4735, 4745, 9470, 9490, 11315, 12311, 22630, 24622, 29357, 29419, 58714, 58838, 61555, 69131, 123110, 138262, 146785, 147095, 293570, 294190, 345655, 381641, 691310, 763282, 898703, 1797406, 1908205, 2143061, 3816410, 4286122, 4493515, 8987030, 10715305, 21430610, 27859793, 55719586, 139298965, 278597930]

約数ペア:

[(1, 278597930), (2, 139298965), (5, 55719586), (10, 27859793), (13, 21430610), (26, 10715305), (31, 8987030), (62, 4493515), (65, 4286122), (73, 3816410), (130, 2143061), (146, 1908205), (155, 1797406), (310, 898703), (365, 763282), (403, 691310), (730, 381641), (806, 345655), (947, 294190), (949, 293570), (1894, 147095), (1898, 146785), (2015, 138262), (2263, 123110), (4030, 69131), (4526, 61555), (4735, 58838), (4745, 58714), (9470, 29419), (9490, 29357), (11315, 24622), (12311, 22630)]