20787902

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{3209}}^1$

素因数の和:3331

約数の個数: 16

約数和(自身を含む): 32356800

約数和(自身を除く): 11568898

約数列:

[1, 2, 41, 79, 82, 158, 3209, 3239, 6418, 6478, 131569, 253511, 263138, 507022, 10393951, 20787902]

約数ペア:

[(1, 20787902), (2, 10393951), (41, 507022), (79, 263138), (82, 253511), (158, 131569), (3209, 6478), (3239, 6418)]