42891980

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{11981}}^1$

素因数の和:12169

約数の個数: 24

約数和(自身を含む): 90583920

約数和(自身を除く): 47691940

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 11981, 23962, 47924, 59905, 119810, 239620, 2144599, 4289198, 8578396, 10722995, 21445990, 42891980]

約数ペア:

[(1, 42891980), (2, 21445990), (4, 10722995), (5, 8578396), (10, 4289198), (20, 2144599), (179, 239620), (358, 119810), (716, 59905), (895, 47924), (1790, 23962), (3580, 11981)]