18781196

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{821}}^1$

素因数の和:894

約数の個数: 48

約数和(自身を含む): 40508160

約数和(自身を除く): 21726964

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 43, 76, 86, 133, 172, 266, 301, 532, 602, 817, 821, 1204, 1634, 1642, 3268, 3284, 5719, 5747, 11438, 11494, 15599, 22876, 22988, 31198, 35303, 62396, 70606, 109193, 141212, 218386, 247121, 436772, 494242, 670757, 988484, 1341514, 2683028, 4695299, 9390598, 18781196]

約数ペア:

[(1, 18781196), (2, 9390598), (4, 4695299), (7, 2683028), (14, 1341514), (19, 988484), (28, 670757), (38, 494242), (43, 436772), (76, 247121), (86, 218386), (133, 141212), (172, 109193), (266, 70606), (301, 62396), (532, 35303), (602, 31198), (817, 22988), (821, 22876), (1204, 15599), (1634, 11494), (1642, 11438), (3268, 5747), (3284, 5719)]