661821748

素因数分解:

$2^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{284777}}^1$

素因数の和:284871

約数の個数: 24

約数和(自身を含む): 1339595712

約数和(自身を除く): 677773964

約数列:

[1, 2, 4, 7, 14, 28, 83, 166, 332, 581, 1162, 2324, 284777, 569554, 1139108, 1993439, 3986878, 7973756, 23636491, 47272982, 94545964, 165455437, 330910874, 661821748]

約数ペア:

[(1, 661821748), (2, 330910874), (4, 165455437), (7, 94545964), (14, 47272982), (28, 23636491), (83, 7973756), (166, 3986878), (332, 1993439), (581, 1139108), (1162, 569554), (2324, 284777)]