18668020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 46769184

約数和(自身を除く): 28101164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 443, 490, 602, 860, 886, 980, 1204, 1505, 1772, 2107, 2215, 3010, 3101, 4214, 4430, 6020, 6202, 8428, 8860, 10535, 12404, 15505, 19049, 21070, 21707, 31010, 38098, 42140, 43414, 62020, 76196, 86828, 95245, 108535, 133343, 190490, 217070, 266686, 380980, 434140, 533372, 666715, 933401, 1333430, 1866802, 2666860, 3733604, 4667005, 9334010, 18668020]

約数ペア:

[(1, 18668020), (2, 9334010), (4, 4667005), (5, 3733604), (7, 2666860), (10, 1866802), (14, 1333430), (20, 933401), (28, 666715), (35, 533372), (43, 434140), (49, 380980), (70, 266686), (86, 217070), (98, 190490), (140, 133343), (172, 108535), (196, 95245), (215, 86828), (245, 76196), (301, 62020), (430, 43414), (443, 42140), (490, 38098), (602, 31010), (860, 21707), (886, 21070), (980, 19049), (1204, 15505), (1505, 12404), (1772, 10535), (2107, 8860), (2215, 8428), (3010, 6202), (3101, 6020), (4214, 4430)]