87011920

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15319}}^1$

素因数の和:15403

約数の個数: 40

約数和(自身を含む): 205165440

約数和(自身を除く): 118153520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 15319, 30638, 61276, 76595, 122552, 153190, 245104, 306380, 612760, 1087649, 1225520, 2175298, 4350596, 5438245, 8701192, 10876490, 17402384, 21752980, 43505960, 87011920]

約数ペア:

[(1, 87011920), (2, 43505960), (4, 21752980), (5, 17402384), (8, 10876490), (10, 8701192), (16, 5438245), (20, 4350596), (40, 2175298), (71, 1225520), (80, 1087649), (142, 612760), (284, 306380), (355, 245104), (568, 153190), (710, 122552), (1136, 76595), (1420, 61276), (2840, 30638), (5680, 15319)]