21383404

素因数分解:

$2^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1381}}^1$

素因数の和:1478

約数の個数: 36

約数和(自身を含む): 44113440

約数和(自身を除く): 22730036

約数列:

[1, 2, 4, 7, 14, 28, 49, 79, 98, 158, 196, 316, 553, 1106, 1381, 2212, 2762, 3871, 5524, 7742, 9667, 15484, 19334, 38668, 67669, 109099, 135338, 218198, 270676, 436396, 763693, 1527386, 3054772, 5345851, 10691702, 21383404]

約数ペア:

[(1, 21383404), (2, 10691702), (4, 5345851), (7, 3054772), (14, 1527386), (28, 763693), (49, 436396), (79, 270676), (98, 218198), (158, 135338), (196, 109099), (316, 67669), (553, 38668), (1106, 19334), (1381, 15484), (2212, 9667), (2762, 7742), (3871, 5524)]