20418853

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 27143424

約数和(自身を除く): 6724571

約数列:

[1, 7, 13, 17, 67, 91, 119, 197, 221, 469, 871, 1139, 1379, 1547, 2561, 3349, 6097, 7973, 13199, 14807, 17927, 23443, 43537, 92393, 103649, 171587, 224383, 304759, 1201109, 1570681, 2916979, 20418853]

約数ペア:

[(1, 20418853), (7, 2916979), (13, 1570681), (17, 1201109), (67, 304759), (91, 224383), (119, 171587), (197, 103649), (221, 92393), (469, 43537), (871, 23443), (1139, 17927), (1379, 14807), (1547, 13199), (2561, 7973), (3349, 6097)]