40987921

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 49351680

約数和(自身を除く): 8363759

約数列:

[1, 13, 19, 31, 53, 101, 247, 403, 589, 689, 1007, 1313, 1643, 1919, 3131, 5353, 7657, 13091, 21359, 24947, 31217, 40703, 59489, 69589, 101707, 165943, 405821, 773357, 1322191, 2157259, 3152917, 40987921]

約数ペア:

[(1, 40987921), (13, 3152917), (19, 2157259), (31, 1322191), (53, 773357), (101, 405821), (247, 165943), (403, 101707), (589, 69589), (689, 59489), (1007, 40703), (1313, 31217), (1643, 24947), (1919, 21359), (3131, 13091), (5353, 7657)]