204660820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{809}}^1$

素因数の和:977

約数の個数: 96

約数和(自身を含む): 533433600

約数和(自身を除く): 328772780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 139, 140, 182, 260, 278, 364, 455, 556, 695, 809, 910, 973, 1390, 1618, 1807, 1820, 1946, 2780, 3236, 3614, 3892, 4045, 4865, 5663, 7228, 8090, 9035, 9730, 10517, 11326, 12649, 16180, 18070, 19460, 21034, 22652, 25298, 28315, 36140, 42068, 50596, 52585, 56630, 63245, 73619, 105170, 112451, 113260, 126490, 147238, 210340, 224902, 252980, 294476, 368095, 449804, 562255, 736190, 787157, 1124510, 1461863, 1472380, 1574314, 2249020, 2923726, 3148628, 3935785, 5847452, 7309315, 7871570, 10233041, 14618630, 15743140, 20466082, 29237260, 40932164, 51165205, 102330410, 204660820]

約数ペア:

[(1, 204660820), (2, 102330410), (4, 51165205), (5, 40932164), (7, 29237260), (10, 20466082), (13, 15743140), (14, 14618630), (20, 10233041), (26, 7871570), (28, 7309315), (35, 5847452), (52, 3935785), (65, 3148628), (70, 2923726), (91, 2249020), (130, 1574314), (139, 1472380), (140, 1461863), (182, 1124510), (260, 787157), (278, 736190), (364, 562255), (455, 449804), (556, 368095), (695, 294476), (809, 252980), (910, 224902), (973, 210340), (1390, 147238), (1618, 126490), (1807, 113260), (1820, 112451), (1946, 105170), (2780, 73619), (3236, 63245), (3614, 56630), (3892, 52585), (4045, 50596), (4865, 42068), (5663, 36140), (7228, 28315), (8090, 25298), (9035, 22652), (9730, 21034), (10517, 19460), (11326, 18070), (12649, 16180)]