20913243

素因数分解:

$3^1\times {\mathrm{13}}^3\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:228

約数の個数: 32

約数和(自身を含む): 31987200

約数和(自身を除く): 11073957

約数列:

[1, 3, 13, 19, 39, 57, 167, 169, 247, 501, 507, 741, 2171, 2197, 3173, 3211, 6513, 6591, 9519, 9633, 28223, 41249, 41743, 84669, 123747, 125229, 366899, 536237, 1100697, 1608711, 6971081, 20913243]

約数ペア:

[(1, 20913243), (3, 6971081), (13, 1608711), (19, 1100697), (39, 536237), (57, 366899), (167, 125229), (169, 123747), (247, 84669), (501, 41743), (507, 41249), (741, 28223), (2171, 9633), (2197, 9519), (3173, 6591), (3211, 6513)]