308820040

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{12007}}^1$

素因数の和:12661

約数の個数: 32

約数和(自身を含む): 695983680

約数和(自身を除く): 387163640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 12007, 12860, 24014, 25720, 48028, 60035, 96056, 120070, 240140, 480280, 7720501, 15441002, 30882004, 38602505, 61764008, 77205010, 154410020, 308820040]

約数ペア:

[(1, 308820040), (2, 154410020), (4, 77205010), (5, 61764008), (8, 38602505), (10, 30882004), (20, 15441002), (40, 7720501), (643, 480280), (1286, 240140), (2572, 120070), (3215, 96056), (5144, 60035), (6430, 48028), (12007, 25720), (12860, 24014)]