18530420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{743}}^1$

素因数の和:824

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 22716940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 743, 860, 1247, 1486, 2494, 2972, 3715, 4988, 6235, 7430, 12470, 14860, 21547, 24940, 31949, 43094, 63898, 86188, 107735, 127796, 159745, 215470, 319490, 430940, 638980, 926521, 1853042, 3706084, 4632605, 9265210, 18530420]

約数ペア:

[(1, 18530420), (2, 9265210), (4, 4632605), (5, 3706084), (10, 1853042), (20, 926521), (29, 638980), (43, 430940), (58, 319490), (86, 215470), (116, 159745), (145, 127796), (172, 107735), (215, 86188), (290, 63898), (430, 43094), (580, 31949), (743, 24940), (860, 21547), (1247, 14860), (1486, 12470), (2494, 7430), (2972, 6235), (3715, 4988)]