21840956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{3229}}^1$

素因数の和:3341

約数の個数: 24

約数和(自身を含む): 40698000

約数和(自身を除く): 18857044

約数列:

[1, 2, 4, 19, 38, 76, 89, 178, 356, 1691, 3229, 3382, 6458, 6764, 12916, 61351, 122702, 245404, 287381, 574762, 1149524, 5460239, 10920478, 21840956]

約数ペア:

[(1, 21840956), (2, 10920478), (4, 5460239), (19, 1149524), (38, 574762), (76, 287381), (89, 245404), (178, 122702), (356, 61351), (1691, 12916), (3229, 6764), (3382, 6458)]