21867515

素因数分解:

$5^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:590

約数の個数: 16

約数和(自身を含む): 26828256

約数和(自身を除く): 4960741

約数列:

[1, 5, 73, 181, 331, 365, 905, 1655, 13213, 24163, 59911, 66065, 120815, 299555, 4373503, 21867515]

約数ペア:

[(1, 21867515), (5, 4373503), (73, 299555), (181, 120815), (331, 66065), (365, 59911), (905, 24163), (1655, 13213)]