81109840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144839}}^1$

素因数の和:144859

約数の個数: 40

約数和(自身を含む): 215521920

約数和(自身を除く): 134412080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144839, 289678, 579356, 724195, 1013873, 1158712, 1448390, 2027746, 2317424, 2896780, 4055492, 5069365, 5793560, 8110984, 10138730, 11587120, 16221968, 20277460, 40554920, 81109840]

約数ペア:

[(1, 81109840), (2, 40554920), (4, 20277460), (5, 16221968), (7, 11587120), (8, 10138730), (10, 8110984), (14, 5793560), (16, 5069365), (20, 4055492), (28, 2896780), (35, 2317424), (40, 2027746), (56, 1448390), (70, 1158712), (80, 1013873), (112, 724195), (140, 579356), (280, 289678), (560, 144839)]