878139220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1213}}^1\times {\mathrm{5171}}^1$

素因数の和:6400

約数の個数: 48

約数和(自身を含む): 2109679488

約数和(自身を除く): 1231540268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1213, 2426, 4852, 5171, 6065, 8491, 10342, 12130, 16982, 20684, 24260, 25855, 33964, 36197, 42455, 51710, 72394, 84910, 103420, 144788, 169820, 180985, 361970, 723940, 6272423, 12544846, 25089692, 31362115, 43906961, 62724230, 87813922, 125448460, 175627844, 219534805, 439069610, 878139220]

約数ペア:

[(1, 878139220), (2, 439069610), (4, 219534805), (5, 175627844), (7, 125448460), (10, 87813922), (14, 62724230), (20, 43906961), (28, 31362115), (35, 25089692), (70, 12544846), (140, 6272423), (1213, 723940), (2426, 361970), (4852, 180985), (5171, 169820), (6065, 144788), (8491, 103420), (10342, 84910), (12130, 72394), (16982, 51710), (20684, 42455), (24260, 36197), (25855, 33964)]