21976745

素因数分解:

$5^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{331}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 30883968

約数和(自身を除く): 8907223

約数列:

[1, 5, 7, 35, 49, 245, 271, 331, 1355, 1655, 1897, 2317, 9485, 11585, 13279, 16219, 66395, 81095, 89701, 448505, 627907, 3139535, 4395349, 21976745]

約数ペア:

[(1, 21976745), (5, 4395349), (7, 3139535), (35, 627907), (49, 448505), (245, 89701), (271, 81095), (331, 66395), (1355, 16219), (1655, 13279), (1897, 11585), (2317, 9485)]