79990070

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{20563}}^1$

素因数の和:20959

約数の個数: 16

約数和(自身を含む): 144359280

約数和(自身を除く): 64369210

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 20563, 41126, 102815, 205630, 7999007, 15998014, 39995035, 79990070]

約数ペア:

[(1, 79990070), (2, 39995035), (5, 15998014), (10, 7999007), (389, 205630), (778, 102815), (1945, 41126), (3890, 20563)]