19802013

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{7793}}^1$

素因数の和:7825

約数の個数: 24

約数和(自身を含む): 33171264

約数和(自身を除く): 13369251

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 7793, 23379, 54551, 85723, 163653, 257169, 600061, 942953, 1800183, 2828859, 6600671, 19802013]

約数ペア:

[(1, 19802013), (3, 6600671), (7, 2828859), (11, 1800183), (21, 942953), (33, 600061), (77, 257169), (121, 163653), (231, 85723), (363, 54551), (847, 23379), (2541, 7793)]