21066160

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^2$

素因数の和:250

約数の個数: 60

約数和(自身を含む): 51590448

約数和(自身を除く): 30524288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 107, 115, 184, 214, 230, 368, 428, 460, 535, 856, 920, 1070, 1712, 1840, 2140, 2461, 4280, 4922, 8560, 9844, 11449, 12305, 19688, 22898, 24610, 39376, 45796, 49220, 57245, 91592, 98440, 114490, 183184, 196880, 228980, 263327, 457960, 526654, 915920, 1053308, 1316635, 2106616, 2633270, 4213232, 5266540, 10533080, 21066160]

約数ペア:

[(1, 21066160), (2, 10533080), (4, 5266540), (5, 4213232), (8, 2633270), (10, 2106616), (16, 1316635), (20, 1053308), (23, 915920), (40, 526654), (46, 457960), (80, 263327), (92, 228980), (107, 196880), (115, 183184), (184, 114490), (214, 98440), (230, 91592), (368, 57245), (428, 49220), (460, 45796), (535, 39376), (856, 24610), (920, 22898), (1070, 19688), (1712, 12305), (1840, 11449), (2140, 9844), (2461, 8560), (4280, 4922)]