21005672

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{269}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 40629600

約数和(自身を除く): 19623928

約数列:

[1, 2, 4, 8, 43, 86, 172, 227, 269, 344, 454, 538, 908, 1076, 1816, 2152, 9761, 11567, 19522, 23134, 39044, 46268, 61063, 78088, 92536, 122126, 244252, 488504, 2625709, 5251418, 10502836, 21005672]

約数ペア:

[(1, 21005672), (2, 10502836), (4, 5251418), (8, 2625709), (43, 488504), (86, 244252), (172, 122126), (227, 92536), (269, 78088), (344, 61063), (454, 46268), (538, 39044), (908, 23134), (1076, 19522), (1816, 11567), (2152, 9761)]