1855420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 4616640

約数和(自身を除く): 2761220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 457, 580, 812, 914, 1015, 1828, 2030, 2285, 3199, 4060, 4570, 6398, 9140, 12796, 13253, 15995, 26506, 31990, 53012, 63980, 66265, 92771, 132530, 185542, 265060, 371084, 463855, 927710, 1855420]

約数ペア:

[(1, 1855420), (2, 927710), (4, 463855), (5, 371084), (7, 265060), (10, 185542), (14, 132530), (20, 92771), (28, 66265), (29, 63980), (35, 53012), (58, 31990), (70, 26506), (116, 15995), (140, 13253), (145, 12796), (203, 9140), (290, 6398), (406, 4570), (457, 4060), (580, 3199), (812, 2285), (914, 2030), (1015, 1828)]