12942140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 28274400

約数和(自身を除く): 15332260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 101, 149, 172, 202, 215, 298, 404, 430, 505, 596, 745, 860, 1010, 1490, 2020, 2980, 4343, 6407, 8686, 12814, 15049, 17372, 21715, 25628, 30098, 32035, 43430, 60196, 64070, 75245, 86860, 128140, 150490, 300980, 647107, 1294214, 2588428, 3235535, 6471070, 12942140]

約数ペア:

[(1, 12942140), (2, 6471070), (4, 3235535), (5, 2588428), (10, 1294214), (20, 647107), (43, 300980), (86, 150490), (101, 128140), (149, 86860), (172, 75245), (202, 64070), (215, 60196), (298, 43430), (404, 32035), (430, 30098), (505, 25628), (596, 21715), (745, 17372), (860, 15049), (1010, 12814), (1490, 8686), (2020, 6407), (2980, 4343)]