28147917

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{9643}}^1$

素因数の和:9792

約数の個数: 16

約数和(自身を含む): 43205120

約数和(自身を除く): 15057203

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 9643, 28929, 67501, 202503, 1340377, 4021131, 9382639, 28147917]

約数ペア:

[(1, 28147917), (3, 9382639), (7, 4021131), (21, 1340377), (139, 202503), (417, 67501), (973, 28929), (2919, 9643)]