256113480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{304897}}^1$

素因数の和:304918

約数の個数: 64

約数和(自身を含む): 878106240

約数和(自身を除く): 621992760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 304897, 609794, 914691, 1219588, 1524485, 1829382, 2134279, 2439176, 3048970, 3658764, 4268558, 4573455, 6097940, 6402837, 7317528, 8537116, 9146910, 10671395, 12195880, 12805674, 17074232, 18293820, 21342790, 25611348, 32014185, 36587640, 42685580, 51222696, 64028370, 85371160, 128056740, 256113480]

約数ペア:

[(1, 256113480), (2, 128056740), (3, 85371160), (4, 64028370), (5, 51222696), (6, 42685580), (7, 36587640), (8, 32014185), (10, 25611348), (12, 21342790), (14, 18293820), (15, 17074232), (20, 12805674), (21, 12195880), (24, 10671395), (28, 9146910), (30, 8537116), (35, 7317528), (40, 6402837), (42, 6097940), (56, 4573455), (60, 4268558), (70, 3658764), (84, 3048970), (105, 2439176), (120, 2134279), (140, 1829382), (168, 1524485), (210, 1219588), (280, 914691), (420, 609794), (840, 304897)]