19947040

素因数分解:

$2^5\times 5^1\times {\mathrm{124669}}^1$

素因数の和:124684

約数の個数: 24

約数和(自身を含む): 47125260

約数和(自身を除く): 27178220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124669, 249338, 498676, 623345, 997352, 1246690, 1994704, 2493380, 3989408, 4986760, 9973520, 19947040]

約数ペア:

[(1, 19947040), (2, 9973520), (4, 4986760), (5, 3989408), (8, 2493380), (10, 1994704), (16, 1246690), (20, 997352), (32, 623345), (40, 498676), (80, 249338), (160, 124669)]