21681640

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{23567}}^1$

素因数の和:23601

約数の個数: 32

約数和(自身を含む): 50906880

約数和(自身を除く): 29225240

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 23567, 47134, 94268, 117835, 188536, 235670, 471340, 542041, 942680, 1084082, 2168164, 2710205, 4336328, 5420410, 10840820, 21681640]

約数ペア:

[(1, 21681640), (2, 10840820), (4, 5420410), (5, 4336328), (8, 2710205), (10, 2168164), (20, 1084082), (23, 942680), (40, 542041), (46, 471340), (92, 235670), (115, 188536), (184, 117835), (230, 94268), (460, 47134), (920, 23567)]