19941920

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5419}}^1$

素因数の和:5457

約数の個数: 48

約数和(自身を含む): 49170240

約数和(自身を除く): 29228320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5419, 10838, 21676, 27095, 43352, 54190, 86704, 108380, 124637, 173408, 216760, 249274, 433520, 498548, 623185, 867040, 997096, 1246370, 1994192, 2492740, 3988384, 4985480, 9970960, 19941920]

約数ペア:

[(1, 19941920), (2, 9970960), (4, 4985480), (5, 3988384), (8, 2492740), (10, 1994192), (16, 1246370), (20, 997096), (23, 867040), (32, 623185), (40, 498548), (46, 433520), (80, 249274), (92, 216760), (115, 173408), (160, 124637), (184, 108380), (230, 86704), (368, 54190), (460, 43352), (736, 27095), (920, 21676), (1840, 10838), (3680, 5419)]