21640723

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{461}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 24526656

約数和(自身を除く): 2885933

約数列:

[1, 13, 23, 157, 299, 461, 2041, 3611, 5993, 10603, 46943, 72377, 137839, 940901, 1664671, 21640723]

約数ペア:

[(1, 21640723), (13, 1664671), (23, 940901), (157, 137839), (299, 72377), (461, 46943), (2041, 10603), (3611, 5993)]