205473940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{1481}}^1$

素因数の和:2488

約数の個数: 48

約数和(自身を含む): 493968384

約数和(自身を除く): 288494444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991, 1481, 1982, 2962, 3964, 4955, 5924, 6937, 7405, 9910, 10367, 13874, 14810, 19820, 20734, 27748, 29620, 34685, 41468, 51835, 69370, 103670, 138740, 207340, 1467671, 2935342, 5870684, 7338355, 10273697, 14676710, 20547394, 29353420, 41094788, 51368485, 102736970, 205473940]

約数ペア:

[(1, 205473940), (2, 102736970), (4, 51368485), (5, 41094788), (7, 29353420), (10, 20547394), (14, 14676710), (20, 10273697), (28, 7338355), (35, 5870684), (70, 2935342), (140, 1467671), (991, 207340), (1481, 138740), (1982, 103670), (2962, 69370), (3964, 51835), (4955, 41468), (5924, 34685), (6937, 29620), (7405, 27748), (9910, 20734), (10367, 19820), (13874, 14810)]