21997718211

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2659}}^1\times {\mathrm{7433}}^1$

素因数の和:10155

約数の個数: 32

約数和(自身を含む): 34170232320

約数和(自身を除く): 12172514109

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 2659, 7433, 7977, 18613, 22299, 52031, 55839, 140927, 156093, 393949, 422781, 986489, 1181847, 2757643, 2959467, 8272929, 19764347, 59293041, 138350429, 415051287, 1047510391, 3142531173, 7332572737, 21997718211]

約数ペア:

[(1, 21997718211), (3, 7332572737), (7, 3142531173), (21, 1047510391), (53, 415051287), (159, 138350429), (371, 59293041), (1113, 19764347), (2659, 8272929), (7433, 2959467), (7977, 2757643), (18613, 1181847), (22299, 986489), (52031, 422781), (55839, 393949), (140927, 156093)]