20257580

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2953}}^1$

素因数の和:2983

約数の個数: 48

約数和(自身を含む): 49627200

約数和(自身を除く): 29369620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2953, 3430, 5906, 6860, 11812, 14765, 20671, 29530, 41342, 59060, 82684, 103355, 144697, 206710, 289394, 413420, 578788, 723485, 1012879, 1446970, 2025758, 2893940, 4051516, 5064395, 10128790, 20257580]

約数ペア:

[(1, 20257580), (2, 10128790), (4, 5064395), (5, 4051516), (7, 2893940), (10, 2025758), (14, 1446970), (20, 1012879), (28, 723485), (35, 578788), (49, 413420), (70, 289394), (98, 206710), (140, 144697), (196, 103355), (245, 82684), (343, 59060), (490, 41342), (686, 29530), (980, 20671), (1372, 14765), (1715, 11812), (2953, 6860), (3430, 5906)]