128982280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1663}}^1$

素因数の和:1958

約数の個数: 64

約数和(自身を含む): 333066240

約数和(自身を除く): 204083960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 277, 280, 554, 1108, 1385, 1663, 1939, 2216, 2770, 3326, 3878, 5540, 6652, 7756, 8315, 9695, 11080, 11641, 13304, 15512, 16630, 19390, 23282, 33260, 38780, 46564, 58205, 66520, 77560, 93128, 116410, 232820, 460651, 465640, 921302, 1842604, 2303255, 3224557, 3685208, 4606510, 6449114, 9213020, 12898228, 16122785, 18426040, 25796456, 32245570, 64491140, 128982280]

約数ペア:

[(1, 128982280), (2, 64491140), (4, 32245570), (5, 25796456), (7, 18426040), (8, 16122785), (10, 12898228), (14, 9213020), (20, 6449114), (28, 4606510), (35, 3685208), (40, 3224557), (56, 2303255), (70, 1842604), (140, 921302), (277, 465640), (280, 460651), (554, 232820), (1108, 116410), (1385, 93128), (1663, 77560), (1939, 66520), (2216, 58205), (2770, 46564), (3326, 38780), (3878, 33260), (5540, 23282), (6652, 19390), (7756, 16630), (8315, 15512), (9695, 13304), (11080, 11641)]