638974788

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{31489}}^1$

素因数の和:31604

約数の個数: 48

約数和(自身を含む): 1587096000

約数和(自身を除く): 948121212

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 89, 114, 178, 228, 267, 356, 534, 1068, 1691, 3382, 5073, 6764, 10146, 20292, 31489, 62978, 94467, 125956, 188934, 377868, 598291, 1196582, 1794873, 2393164, 2802521, 3589746, 5605042, 7179492, 8407563, 11210084, 16815126, 33630252, 53247899, 106495798, 159743697, 212991596, 319487394, 638974788]

約数ペア:

[(1, 638974788), (2, 319487394), (3, 212991596), (4, 159743697), (6, 106495798), (12, 53247899), (19, 33630252), (38, 16815126), (57, 11210084), (76, 8407563), (89, 7179492), (114, 5605042), (178, 3589746), (228, 2802521), (267, 2393164), (356, 1794873), (534, 1196582), (1068, 598291), (1691, 377868), (3382, 188934), (5073, 125956), (6764, 94467), (10146, 62978), (20292, 31489)]