20720730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{4969}}^1$

素因数の和:5118

約数の個数: 32

約数和(自身を含む): 50097600

約数和(自身を除く): 29376870

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 139, 278, 417, 695, 834, 1390, 2085, 4170, 4969, 9938, 14907, 24845, 29814, 49690, 74535, 149070, 690691, 1381382, 2072073, 3453455, 4144146, 6906910, 10360365, 20720730]

約数ペア:

[(1, 20720730), (2, 10360365), (3, 6906910), (5, 4144146), (6, 3453455), (10, 2072073), (15, 1381382), (30, 690691), (139, 149070), (278, 74535), (417, 49690), (695, 29814), (834, 24845), (1390, 14907), (2085, 9938), (4170, 4969)]