18879320

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20521}}^1$

素因数の和:20555

約数の個数: 32

約数和(自身を含む): 44327520

約数和(自身を除く): 25448200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 20521, 41042, 82084, 102605, 164168, 205210, 410420, 471983, 820840, 943966, 1887932, 2359915, 3775864, 4719830, 9439660, 18879320]

約数ペア:

[(1, 18879320), (2, 9439660), (4, 4719830), (5, 3775864), (8, 2359915), (10, 1887932), (20, 943966), (23, 820840), (40, 471983), (46, 410420), (92, 205210), (115, 164168), (184, 102605), (230, 82084), (460, 41042), (920, 20521)]