215213185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2789}}^1$

素因数の和:2889

約数の個数: 32

約数和(自身を含む): 298909440

約数和(自身を除く): 83696255

約数列:

[1, 5, 11, 23, 55, 61, 115, 253, 305, 671, 1265, 1403, 2789, 3355, 7015, 13945, 15433, 30679, 64147, 77165, 153395, 170129, 320735, 705617, 850645, 1871419, 3528085, 3912967, 9357095, 19564835, 43042637, 215213185]

約数ペア:

[(1, 215213185), (5, 43042637), (11, 19564835), (23, 9357095), (55, 3912967), (61, 3528085), (115, 1871419), (253, 850645), (305, 705617), (671, 320735), (1265, 170129), (1403, 153395), (2789, 77165), (3355, 64147), (7015, 30679), (13945, 15433)]