17750020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{821}}^1$

素因数の和:900

約数の個数: 48

約数和(自身を含む): 39771648

約数和(自身を除く): 22021628

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 47, 92, 94, 115, 188, 230, 235, 460, 470, 821, 940, 1081, 1642, 2162, 3284, 4105, 4324, 5405, 8210, 10810, 16420, 18883, 21620, 37766, 38587, 75532, 77174, 94415, 154348, 188830, 192935, 377660, 385870, 771740, 887501, 1775002, 3550004, 4437505, 8875010, 17750020]

約数ペア:

[(1, 17750020), (2, 8875010), (4, 4437505), (5, 3550004), (10, 1775002), (20, 887501), (23, 771740), (46, 385870), (47, 377660), (92, 192935), (94, 188830), (115, 154348), (188, 94415), (230, 77174), (235, 75532), (460, 38587), (470, 37766), (821, 21620), (940, 18883), (1081, 16420), (1642, 10810), (2162, 8210), (3284, 5405), (4105, 4324)]