21917840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{39139}}^1$

素因数の和:39159

約数の個数: 40

約数和(自身を含む): 58240320

約数和(自身を除く): 36322480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 39139, 78278, 156556, 195695, 273973, 313112, 391390, 547946, 626224, 782780, 1095892, 1369865, 1565560, 2191784, 2739730, 3131120, 4383568, 5479460, 10958920, 21917840]

約数ペア:

[(1, 21917840), (2, 10958920), (4, 5479460), (5, 4383568), (7, 3131120), (8, 2739730), (10, 2191784), (14, 1565560), (16, 1369865), (20, 1095892), (28, 782780), (35, 626224), (40, 547946), (56, 391390), (70, 313112), (80, 273973), (112, 195695), (140, 156556), (280, 78278), (560, 39139)]