21797930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{28309}}^1$

素因数の和:28334

約数の個数: 32

約数和(自身を含む): 48919680

約数和(自身を除く): 27121750

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 28309, 56618, 141545, 198163, 283090, 311399, 396326, 622798, 990815, 1556995, 1981630, 2179793, 3113990, 4359586, 10898965, 21797930]

約数ペア:

[(1, 21797930), (2, 10898965), (5, 4359586), (7, 3113990), (10, 2179793), (11, 1981630), (14, 1556995), (22, 990815), (35, 622798), (55, 396326), (70, 311399), (77, 283090), (110, 198163), (154, 141545), (385, 56618), (770, 28309)]