20815760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37171}}^1$

素因数の和:37191

約数の個数: 40

約数和(自身を含む): 55311936

約数和(自身を除く): 34496176

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37171, 74342, 148684, 185855, 260197, 297368, 371710, 520394, 594736, 743420, 1040788, 1300985, 1486840, 2081576, 2601970, 2973680, 4163152, 5203940, 10407880, 20815760]

約数ペア:

[(1, 20815760), (2, 10407880), (4, 5203940), (5, 4163152), (7, 2973680), (8, 2601970), (10, 2081576), (14, 1486840), (16, 1300985), (20, 1040788), (28, 743420), (35, 594736), (40, 520394), (56, 371710), (70, 297368), (80, 260197), (112, 185855), (140, 148684), (280, 74342), (560, 37171)]