639392908

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{4931}}^1$

素因数の和:5374

約数の個数: 48

約数和(自身を含む): 1398636288

約数和(自身を除く): 759243380

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 421, 842, 1684, 2947, 4631, 4931, 5894, 9262, 9862, 11788, 18524, 19724, 32417, 34517, 54241, 64834, 69034, 108482, 129668, 138068, 216964, 379687, 759374, 1518748, 2075951, 4151902, 8303804, 14531657, 22835461, 29063314, 45670922, 58126628, 91341844, 159848227, 319696454, 639392908]

約数ペア:

[(1, 639392908), (2, 319696454), (4, 159848227), (7, 91341844), (11, 58126628), (14, 45670922), (22, 29063314), (28, 22835461), (44, 14531657), (77, 8303804), (154, 4151902), (308, 2075951), (421, 1518748), (842, 759374), (1684, 379687), (2947, 216964), (4631, 138068), (4931, 129668), (5894, 108482), (9262, 69034), (9862, 64834), (11788, 54241), (18524, 34517), (19724, 32417)]