20895611

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 24738000

約数和(自身を除く): 3842389

約数列:

[1, 11, 19, 61, 121, 149, 209, 671, 1159, 1639, 2299, 2831, 7381, 9089, 12749, 18029, 31141, 99979, 140239, 172691, 342551, 1099769, 1899601, 20895611]

約数ペア:

[(1, 20895611), (11, 1899601), (19, 1099769), (61, 342551), (121, 172691), (149, 140239), (209, 99979), (671, 31141), (1159, 18029), (1639, 12749), (2299, 9089), (2831, 7381)]