18921892

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 37743552

約数和(自身を除く): 18821660

約数列:

[1, 2, 4, 11, 22, 43, 44, 73, 86, 137, 146, 172, 274, 292, 473, 548, 803, 946, 1507, 1606, 1892, 3014, 3139, 3212, 5891, 6028, 6278, 10001, 11782, 12556, 20002, 23564, 34529, 40004, 64801, 69058, 110011, 129602, 138116, 220022, 259204, 430043, 440044, 860086, 1720172, 4730473, 9460946, 18921892]

約数ペア:

[(1, 18921892), (2, 9460946), (4, 4730473), (11, 1720172), (22, 860086), (43, 440044), (44, 430043), (73, 259204), (86, 220022), (137, 138116), (146, 129602), (172, 110011), (274, 69058), (292, 64801), (473, 40004), (548, 34529), (803, 23564), (946, 20002), (1507, 12556), (1606, 11782), (1892, 10001), (3014, 6278), (3139, 6028), (3212, 5891)]