21320080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11587}}^1$

素因数の和:11623

約数の個数: 40

約数和(自身を含む): 51728832

約数和(自身を除く): 30408752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11587, 23174, 46348, 57935, 92696, 115870, 185392, 231740, 266501, 463480, 533002, 926960, 1066004, 1332505, 2132008, 2665010, 4264016, 5330020, 10660040, 21320080]

約数ペア:

[(1, 21320080), (2, 10660040), (4, 5330020), (5, 4264016), (8, 2665010), (10, 2132008), (16, 1332505), (20, 1066004), (23, 926960), (40, 533002), (46, 463480), (80, 266501), (92, 231740), (115, 185392), (184, 115870), (230, 92696), (368, 57935), (460, 46348), (920, 23174), (1840, 11587)]