21654376

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1307}}^1$

素因数の和:1441

約数の個数: 32

約数和(自身を含む): 43164000

約数和(自身を除く): 21509624

約数列:

[1, 2, 4, 8, 19, 38, 76, 109, 152, 218, 436, 872, 1307, 2071, 2614, 4142, 5228, 8284, 10456, 16568, 24833, 49666, 99332, 142463, 198664, 284926, 569852, 1139704, 2706797, 5413594, 10827188, 21654376]

約数ペア:

[(1, 21654376), (2, 10827188), (4, 5413594), (8, 2706797), (19, 1139704), (38, 569852), (76, 284926), (109, 198664), (152, 142463), (218, 99332), (436, 49666), (872, 24833), (1307, 16568), (2071, 10456), (2614, 8284), (4142, 5228)]