640931522

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{317}}^1\times {\mathrm{691}}^1$

素因数の和:1047

約数の個数: 64

約数和(自身を含む): 1267522560

約数和(自身を除く): 626591038

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 77, 133, 154, 209, 266, 317, 418, 634, 691, 1382, 1463, 2219, 2926, 3487, 4438, 4837, 6023, 6974, 7601, 9674, 12046, 13129, 15202, 24409, 26258, 42161, 48818, 53207, 66253, 84322, 91903, 106414, 132506, 144419, 183806, 219047, 288838, 438094, 463771, 927542, 1010933, 1533329, 2021866, 2409517, 3066658, 4161893, 4819034, 8323786, 16866619, 29133251, 33733238, 45780823, 58266502, 91561646, 320465761, 640931522]

約数ペア:

[(1, 640931522), (2, 320465761), (7, 91561646), (11, 58266502), (14, 45780823), (19, 33733238), (22, 29133251), (38, 16866619), (77, 8323786), (133, 4819034), (154, 4161893), (209, 3066658), (266, 2409517), (317, 2021866), (418, 1533329), (634, 1010933), (691, 927542), (1382, 463771), (1463, 438094), (2219, 288838), (2926, 219047), (3487, 183806), (4438, 144419), (4837, 132506), (6023, 106414), (6974, 91903), (7601, 84322), (9674, 66253), (12046, 53207), (13129, 48818), (15202, 42161), (24409, 26258)]