21216794495

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1051}}^1\times {\mathrm{18269}}^1$

素因数の和:19355

約数の個数: 32

約数和(自身を含む): 29060700480

約数和(自身を除く): 7843905985

約数列:

[1, 5, 13, 17, 65, 85, 221, 1051, 1105, 5255, 13663, 17867, 18269, 68315, 89335, 91345, 232271, 237497, 310573, 1161355, 1187485, 1552865, 4037449, 19200719, 20187245, 96003595, 249609347, 326412223, 1248046735, 1632061115, 4243358899, 21216794495]

約数ペア:

[(1, 21216794495), (5, 4243358899), (13, 1632061115), (17, 1248046735), (65, 326412223), (85, 249609347), (221, 96003595), (1051, 20187245), (1105, 19200719), (5255, 4037449), (13663, 1552865), (17867, 1187485), (18269, 1161355), (68315, 310573), (89335, 237497), (91345, 232271)]