21856930

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{379}}^1$

素因数の和:538

約数の個数: 32

約数和(自身を含む): 40492800

約数和(自身を除く): 18635870

約数列:

[1, 2, 5, 10, 73, 79, 146, 158, 365, 379, 395, 730, 758, 790, 1895, 3790, 5767, 11534, 27667, 28835, 29941, 55334, 57670, 59882, 138335, 149705, 276670, 299410, 2185693, 4371386, 10928465, 21856930]

約数ペア:

[(1, 21856930), (2, 10928465), (5, 4371386), (10, 2185693), (73, 299410), (79, 276670), (146, 149705), (158, 138335), (365, 59882), (379, 57670), (395, 55334), (730, 29941), (758, 28835), (790, 27667), (1895, 11534), (3790, 5767)]