19540720

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5197}}^1$

素因数の和:5257

約数の個数: 40

約数和(自身を含む): 46407744

約数和(自身を除く): 26867024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5197, 10394, 20788, 25985, 41576, 51970, 83152, 103940, 207880, 244259, 415760, 488518, 977036, 1221295, 1954072, 2442590, 3908144, 4885180, 9770360, 19540720]

約数ペア:

[(1, 19540720), (2, 9770360), (4, 4885180), (5, 3908144), (8, 2442590), (10, 1954072), (16, 1221295), (20, 977036), (40, 488518), (47, 415760), (80, 244259), (94, 207880), (188, 103940), (235, 83152), (376, 51970), (470, 41576), (752, 25985), (940, 20788), (1880, 10394), (3760, 5197)]