21812408

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{631}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 42660000

約数和(自身を除く): 20847592

約数列:

[1, 2, 4, 8, 29, 58, 116, 149, 232, 298, 596, 631, 1192, 1262, 2524, 4321, 5048, 8642, 17284, 18299, 34568, 36598, 73196, 94019, 146392, 188038, 376076, 752152, 2726551, 5453102, 10906204, 21812408]

約数ペア:

[(1, 21812408), (2, 10906204), (4, 5453102), (8, 2726551), (29, 752152), (58, 376076), (116, 188038), (149, 146392), (232, 94019), (298, 73196), (596, 36598), (631, 34568), (1192, 18299), (1262, 17284), (2524, 8642), (4321, 5048)]