19809779495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11618639}}^1$

素因数の和:11618686

約数の個数: 16

約数和(自身を含む): 26769346560

約数和(自身を除く): 6959567065

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11618639, 58093195, 127805029, 360177809, 639025145, 1800889045, 3961955899, 19809779495]

約数ペア:

[(1, 19809779495), (5, 3961955899), (11, 1800889045), (31, 639025145), (55, 360177809), (155, 127805029), (341, 58093195), (1705, 11618639)]