9102020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 20418048

約数和(自身を除く): 11316028

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 421, 460, 470, 842, 940, 1081, 1684, 2105, 2162, 4210, 4324, 5405, 8420, 9683, 10810, 19366, 19787, 21620, 38732, 39574, 48415, 79148, 96830, 98935, 193660, 197870, 395740, 455101, 910202, 1820404, 2275505, 4551010, 9102020]

約数ペア:

[(1, 9102020), (2, 4551010), (4, 2275505), (5, 1820404), (10, 910202), (20, 455101), (23, 395740), (46, 197870), (47, 193660), (92, 98935), (94, 96830), (115, 79148), (188, 48415), (230, 39574), (235, 38732), (421, 21620), (460, 19787), (470, 19366), (842, 10810), (940, 9683), (1081, 8420), (1684, 5405), (2105, 4324), (2162, 4210)]