20974879

素因数分解:

${\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{239}}^1$

素因数の和:438

約数の個数: 16

約数和(自身を含む): 23040000

約数和(自身を除く): 2065121

約数列:

[1, 19, 31, 149, 239, 589, 2831, 4541, 4619, 7409, 35611, 87761, 140771, 676609, 1103941, 20974879]

約数ペア:

[(1, 20974879), (19, 1103941), (31, 676609), (149, 140771), (239, 87761), (589, 35611), (2831, 7409), (4541, 4619)]