18620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1$

素因数の和:42

約数の個数: 36

約数和(自身を含む): 47880

約数和(自身を除く): 29260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1330, 1862, 2660, 3724, 4655, 9310, 18620]

約数ペア:

[(1, 18620), (2, 9310), (4, 4655), (5, 3724), (7, 2660), (10, 1862), (14, 1330), (19, 980), (20, 931), (28, 665), (35, 532), (38, 490), (49, 380), (70, 266), (76, 245), (95, 196), (98, 190), (133, 140)]