21720642

素因数分解:

$2^1\times 3^1\times {\mathrm{997}}^1\times {\mathrm{3631}}^1$

素因数の和:4633

約数の個数: 16

約数和(自身を含む): 43496832

約数和(自身を除く): 21776190

約数列:

[1, 2, 3, 6, 997, 1994, 2991, 3631, 5982, 7262, 10893, 21786, 3620107, 7240214, 10860321, 21720642]

約数ペア:

[(1, 21720642), (2, 10860321), (3, 7240214), (6, 3620107), (997, 21786), (1994, 10893), (2991, 7262), (3631, 5982)]