31121990

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2879}}^1$

素因数の和:2956

約数の個数: 32

約数和(自身を含む): 59719680

約数和(自身を除く): 28597690

約数列:

[1, 2, 5, 10, 23, 46, 47, 94, 115, 230, 235, 470, 1081, 2162, 2879, 5405, 5758, 10810, 14395, 28790, 66217, 132434, 135313, 270626, 331085, 662170, 676565, 1353130, 3112199, 6224398, 15560995, 31121990]

約数ペア:

[(1, 31121990), (2, 15560995), (5, 6224398), (10, 3112199), (23, 1353130), (46, 676565), (47, 662170), (94, 331085), (115, 270626), (230, 135313), (235, 132434), (470, 66217), (1081, 28790), (2162, 14395), (2879, 10810), (5405, 5758)]