256877180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{857}}^1\times {\mathrm{2141}}^1$

素因数の和:3014

約数の個数: 48

約数和(自身を含む): 617512896

約数和(自身を除く): 360635716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 857, 1714, 2141, 3428, 4282, 4285, 5999, 8564, 8570, 10705, 11998, 14987, 17140, 21410, 23996, 29974, 29995, 42820, 59948, 59990, 74935, 119980, 149870, 299740, 1834837, 3669674, 7339348, 9174185, 12843859, 18348370, 25687718, 36696740, 51375436, 64219295, 128438590, 256877180]

約数ペア:

[(1, 256877180), (2, 128438590), (4, 64219295), (5, 51375436), (7, 36696740), (10, 25687718), (14, 18348370), (20, 12843859), (28, 9174185), (35, 7339348), (70, 3669674), (140, 1834837), (857, 299740), (1714, 149870), (2141, 119980), (3428, 74935), (4282, 59990), (4285, 59948), (5999, 42820), (8564, 29995), (8570, 29974), (10705, 23996), (11998, 21410), (14987, 17140)]