21177837

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{457}}^1$

素因数の和:753

約数の個数: 24

約数和(自身を含む): 32389760

約数和(自身を除く): 11211923

約数列:

[1, 3, 9, 19, 57, 171, 271, 457, 813, 1371, 2439, 4113, 5149, 8683, 15447, 26049, 46341, 78147, 123847, 371541, 1114623, 2353093, 7059279, 21177837]

約数ペア:

[(1, 21177837), (3, 7059279), (9, 2353093), (19, 1114623), (57, 371541), (171, 123847), (271, 78147), (457, 46341), (813, 26049), (1371, 15447), (2439, 8683), (4113, 5149)]