12642280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{277}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 32826240

約数和(自身を除く): 20183960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 277, 280, 326, 554, 652, 815, 1108, 1141, 1304, 1385, 1630, 1939, 2216, 2282, 2770, 3260, 3878, 4564, 5540, 5705, 6520, 7756, 9128, 9695, 11080, 11410, 15512, 19390, 22820, 38780, 45151, 45640, 77560, 90302, 180604, 225755, 316057, 361208, 451510, 632114, 903020, 1264228, 1580285, 1806040, 2528456, 3160570, 6321140, 12642280]

約数ペア:

[(1, 12642280), (2, 6321140), (4, 3160570), (5, 2528456), (7, 1806040), (8, 1580285), (10, 1264228), (14, 903020), (20, 632114), (28, 451510), (35, 361208), (40, 316057), (56, 225755), (70, 180604), (140, 90302), (163, 77560), (277, 45640), (280, 45151), (326, 38780), (554, 22820), (652, 19390), (815, 15512), (1108, 11410), (1141, 11080), (1304, 9695), (1385, 9128), (1630, 7756), (1939, 6520), (2216, 5705), (2282, 5540), (2770, 4564), (3260, 3878)]