20767990

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:436

約数の個数: 32

約数和(自身を含む): 38384640

約数和(自身を除く): 17616650

約数列:

[1, 2, 5, 10, 67, 134, 139, 223, 278, 335, 446, 670, 695, 1115, 1390, 2230, 9313, 14941, 18626, 29882, 30997, 46565, 61994, 74705, 93130, 149410, 154985, 309970, 2076799, 4153598, 10383995, 20767990]

約数ペア:

[(1, 20767990), (2, 10383995), (5, 4153598), (10, 2076799), (67, 309970), (134, 154985), (139, 149410), (223, 93130), (278, 74705), (335, 61994), (446, 46565), (670, 30997), (695, 29882), (1115, 18626), (1390, 14941), (2230, 9313)]