20049460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{541}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 45072720

約数和(自身を除く): 25023260

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 109, 170, 218, 340, 436, 541, 545, 1082, 1090, 1853, 2164, 2180, 2705, 3706, 5410, 7412, 9197, 9265, 10820, 18394, 18530, 36788, 37060, 45985, 58969, 91970, 117938, 183940, 235876, 294845, 589690, 1002473, 1179380, 2004946, 4009892, 5012365, 10024730, 20049460]

約数ペア:

[(1, 20049460), (2, 10024730), (4, 5012365), (5, 4009892), (10, 2004946), (17, 1179380), (20, 1002473), (34, 589690), (68, 294845), (85, 235876), (109, 183940), (170, 117938), (218, 91970), (340, 58969), (436, 45985), (541, 37060), (545, 36788), (1082, 18530), (1090, 18394), (1853, 10820), (2164, 9265), (2180, 9197), (2705, 7412), (3706, 5410)]