21959307

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{457}}^1$

素因数の和:763

約数の個数: 24

約数和(自身を含む): 33580560

約数和(自身を除く): 11621253

約数列:

[1, 3, 9, 19, 57, 171, 281, 457, 843, 1371, 2529, 4113, 5339, 8683, 16017, 26049, 48051, 78147, 128417, 385251, 1155753, 2439923, 7319769, 21959307]

約数ペア:

[(1, 21959307), (3, 7319769), (9, 2439923), (19, 1155753), (57, 385251), (171, 128417), (281, 78147), (457, 48051), (843, 26049), (1371, 16017), (2529, 8683), (4113, 5339)]