20487986

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{7549}}^1$

素因数の和:7633

約数の個数: 16

約数和(自身を含む): 32616000

約数和(自身を除く): 12128014

約数列:

[1, 2, 23, 46, 59, 118, 1357, 2714, 7549, 15098, 173627, 347254, 445391, 890782, 10243993, 20487986]

約数ペア:

[(1, 20487986), (2, 10243993), (23, 890782), (46, 445391), (59, 347254), (118, 173627), (1357, 15098), (2714, 7549)]