21709352

素因数分解:

$2^3\times 7^2\times {\mathrm{55381}}^1$

素因数の和:55401

約数の個数: 24

約数和(自身を含む): 47351610

約数和(自身を除く): 25642258

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 55381, 110762, 221524, 387667, 443048, 775334, 1550668, 2713669, 3101336, 5427338, 10854676, 21709352]

約数ペア:

[(1, 21709352), (2, 10854676), (4, 5427338), (7, 3101336), (8, 2713669), (14, 1550668), (28, 775334), (49, 443048), (56, 387667), (98, 221524), (196, 110762), (392, 55381)]