256984216

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{7417}}^1$

素因数の和:7555

約数の個数: 32

約数和(自身を含む): 496709280

約数和(自身を除く): 239725064

約数列:

[1, 2, 4, 8, 61, 71, 122, 142, 244, 284, 488, 568, 4331, 7417, 8662, 14834, 17324, 29668, 34648, 59336, 452437, 526607, 904874, 1053214, 1809748, 2106428, 3619496, 4212856, 32123027, 64246054, 128492108, 256984216]

約数ペア:

[(1, 256984216), (2, 128492108), (4, 64246054), (8, 32123027), (61, 4212856), (71, 3619496), (122, 2106428), (142, 1809748), (244, 1053214), (284, 904874), (488, 526607), (568, 452437), (4331, 59336), (7417, 34648), (8662, 29668), (14834, 17324)]