78998140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{303839}}^1$

素因数の和:303861

約数の個数: 24

約数和(自身を含む): 178657920

約数和(自身を除く): 99659780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 303839, 607678, 1215356, 1519195, 3038390, 3949907, 6076780, 7899814, 15799628, 19749535, 39499070, 78998140]

約数ペア:

[(1, 78998140), (2, 39499070), (4, 19749535), (5, 15799628), (10, 7899814), (13, 6076780), (20, 3949907), (26, 3038390), (52, 1519195), (65, 1215356), (130, 607678), (260, 303839)]