201981640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{721363}}^1$

素因数の和:721381

約数の個数: 32

約数和(自身を含む): 519382080

約数和(自身を除く): 317400440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 721363, 1442726, 2885452, 3606815, 5049541, 5770904, 7213630, 10099082, 14427260, 20198164, 25247705, 28854520, 40396328, 50495410, 100990820, 201981640]

約数ペア:

[(1, 201981640), (2, 100990820), (4, 50495410), (5, 40396328), (7, 28854520), (8, 25247705), (10, 20198164), (14, 14427260), (20, 10099082), (28, 7213630), (35, 5770904), (40, 5049541), (56, 3606815), (70, 2885452), (140, 1442726), (280, 721363)]