1287321812

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1\times {\mathrm{937}}^1$

素因数の和:1440

約数の個数: 48

約数和(自身を含む): 2603287680

約数和(自身を除く): 1315965868

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 353, 556, 706, 937, 973, 1412, 1874, 1946, 2471, 3748, 3892, 4942, 6559, 9884, 13118, 26236, 49067, 98134, 130243, 196268, 260486, 330761, 343469, 520972, 661522, 686938, 911701, 1323044, 1373876, 1823402, 2315327, 3646804, 4630654, 9261308, 45975779, 91951558, 183903116, 321830453, 643660906, 1287321812]

約数ペア:

[(1, 1287321812), (2, 643660906), (4, 321830453), (7, 183903116), (14, 91951558), (28, 45975779), (139, 9261308), (278, 4630654), (353, 3646804), (556, 2315327), (706, 1823402), (937, 1373876), (973, 1323044), (1412, 911701), (1874, 686938), (1946, 661522), (2471, 520972), (3748, 343469), (3892, 330761), (4942, 260486), (6559, 196268), (9884, 130243), (13118, 98134), (26236, 49067)]