20123015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{2423}}^1$

素因数の和:2590

約数の個数: 16

約数和(自身を含む): 26528256

約数和(自身を除く): 6405241

約数列:

[1, 5, 11, 55, 151, 755, 1661, 2423, 8305, 12115, 26653, 133265, 365873, 1829365, 4024603, 20123015]

約数ペア:

[(1, 20123015), (5, 4024603), (11, 1829365), (55, 365873), (151, 133265), (755, 26653), (1661, 12115), (2423, 8305)]