21359408

素因数分解:

$2^4\times 7^1\times {\mathrm{190709}}^1$

素因数の和:190724

約数の個数: 20

約数和(自身を含む): 47296080

約数和(自身を除く): 25936672

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 190709, 381418, 762836, 1334963, 1525672, 2669926, 3051344, 5339852, 10679704, 21359408]

約数ペア:

[(1, 21359408), (2, 10679704), (4, 5339852), (7, 3051344), (8, 2669926), (14, 1525672), (16, 1334963), (28, 762836), (56, 381418), (112, 190709)]