64978490

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^2\times {\mathrm{1289}}^1$

素因数の和:1438

約数の個数: 24

約数和(自身を含む): 118723860

約数和(自身を除く): 53745370

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 1289, 2578, 5041, 6445, 10082, 12890, 25205, 50410, 91519, 183038, 457595, 915190, 6497849, 12995698, 32489245, 64978490]

約数ペア:

[(1, 64978490), (2, 32489245), (5, 12995698), (10, 6497849), (71, 915190), (142, 457595), (355, 183038), (710, 91519), (1289, 50410), (2578, 25205), (5041, 12890), (6445, 10082)]