21886556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{4721}}^1$

素因数の和:4805

約数の個数: 24

約数和(自身を含む): 40986960

約数和(自身を除く): 19100404

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 244, 1159, 2318, 4636, 4721, 9442, 18884, 89699, 179398, 287981, 358796, 575962, 1151924, 5471639, 10943278, 21886556]

約数ペア:

[(1, 21886556), (2, 10943278), (4, 5471639), (19, 1151924), (38, 575962), (61, 358796), (76, 287981), (122, 179398), (244, 89699), (1159, 18884), (2318, 9442), (4636, 4721)]