389090260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1\times {\mathrm{2999}}^1$

素因数の和:3520

約数の個数: 48

約数和(自身を含む): 882000000

約数和(自身を除く): 492909740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 499, 998, 1996, 2495, 2999, 4990, 5998, 6487, 9980, 11996, 12974, 14995, 25948, 29990, 32435, 38987, 59980, 64870, 77974, 129740, 155948, 194935, 389870, 779740, 1496501, 2993002, 5986004, 7482505, 14965010, 19454513, 29930020, 38909026, 77818052, 97272565, 194545130, 389090260]

約数ペア:

[(1, 389090260), (2, 194545130), (4, 97272565), (5, 77818052), (10, 38909026), (13, 29930020), (20, 19454513), (26, 14965010), (52, 7482505), (65, 5986004), (130, 2993002), (260, 1496501), (499, 779740), (998, 389870), (1996, 194935), (2495, 155948), (2999, 129740), (4990, 77974), (5998, 64870), (6487, 59980), (9980, 38987), (11996, 32435), (12974, 29990), (14995, 25948)]