398577890

素因数分解:

$2^1\times 5^1\times {\mathrm{4051}}^1\times {\mathrm{9839}}^1$

素因数の和:13897

約数の個数: 16

約数和(自身を含む): 717690240

約数和(自身を除く): 319112350

約数列:

[1, 2, 5, 10, 4051, 8102, 9839, 19678, 20255, 40510, 49195, 98390, 39857789, 79715578, 199288945, 398577890]

約数ペア:

[(1, 398577890), (2, 199288945), (5, 79715578), (10, 39857789), (4051, 98390), (8102, 49195), (9839, 40510), (19678, 20255)]