18865520

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10253}}^1$

素因数の和:10289

約数の個数: 40

約数和(自身を含む): 45773856

約数和(自身を除く): 26908336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 10253, 20506, 41012, 51265, 82024, 102530, 164048, 205060, 235819, 410120, 471638, 820240, 943276, 1179095, 1886552, 2358190, 3773104, 4716380, 9432760, 18865520]

約数ペア:

[(1, 18865520), (2, 9432760), (4, 4716380), (5, 3773104), (8, 2358190), (10, 1886552), (16, 1179095), (20, 943276), (23, 820240), (40, 471638), (46, 410120), (80, 235819), (92, 205060), (115, 164048), (184, 102530), (230, 82024), (368, 51265), (460, 41012), (920, 20506), (1840, 10253)]