20918769

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{5231}}^1$

素因数の和:5308

約数の個数: 16

約数和(自身を含む): 29466624

約数和(自身を除く): 8547855

約数列:

[1, 3, 31, 43, 93, 129, 1333, 3999, 5231, 15693, 162161, 224933, 486483, 674799, 6972923, 20918769]

約数ペア:

[(1, 20918769), (3, 6972923), (31, 674799), (43, 486483), (93, 224933), (129, 162161), (1333, 15693), (3999, 5231)]