20953804

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{829}}^1$

素因数の和:993

約数の個数: 24

約数和(自身を含む): 37648800

約数和(自身を除く): 16694996

約数列:

[1, 2, 4, 71, 89, 142, 178, 284, 356, 829, 1658, 3316, 6319, 12638, 25276, 58859, 73781, 117718, 147562, 235436, 295124, 5238451, 10476902, 20953804]

約数ペア:

[(1, 20953804), (2, 10476902), (4, 5238451), (71, 295124), (89, 235436), (142, 147562), (178, 117718), (284, 73781), (356, 58859), (829, 25276), (1658, 12638), (3316, 6319)]