21078164

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{401}}^1\times {\mathrm{773}}^1$

素因数の和:1195

約数の個数: 24

約数和(自身を含む): 39204648

約数和(自身を除く): 18126484

約数列:

[1, 2, 4, 17, 34, 68, 401, 773, 802, 1546, 1604, 3092, 6817, 13141, 13634, 26282, 27268, 52564, 309973, 619946, 1239892, 5269541, 10539082, 21078164]

約数ペア:

[(1, 21078164), (2, 10539082), (4, 5269541), (17, 1239892), (34, 619946), (68, 309973), (401, 52564), (773, 27268), (802, 26282), (1546, 13634), (1604, 13141), (3092, 6817)]