20946569

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1$

素因数の和:333

約数の個数: 24

約数和(自身を含む): 25992000

約数和(自身を除く): 5045431

約数列:

[1, 7, 19, 49, 133, 149, 151, 931, 1043, 1057, 2831, 2869, 7301, 7399, 19817, 20083, 22499, 138719, 140581, 157493, 427481, 1102451, 2992367, 20946569]

約数ペア:

[(1, 20946569), (7, 2992367), (19, 1102451), (49, 427481), (133, 157493), (149, 140581), (151, 138719), (931, 22499), (1043, 20083), (1057, 19817), (2831, 7399), (2869, 7301)]