20945218

素因数分解:

$2^1\times 7^1\times {\mathrm{787}}^1\times {\mathrm{1901}}^1$

素因数の和:2697

約数の個数: 16

約数和(自身を含む): 35970624

約数和(自身を除く): 15025406

約数列:

[1, 2, 7, 14, 787, 1574, 1901, 3802, 5509, 11018, 13307, 26614, 1496087, 2992174, 10472609, 20945218]

約数ペア:

[(1, 20945218), (2, 10472609), (7, 2992174), (14, 1496087), (787, 26614), (1574, 13307), (1901, 11018), (3802, 5509)]