20331640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72613}}^1$

素因数の和:72631

約数の個数: 32

約数和(自身を含む): 52282080

約数和(自身を除く): 31950440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72613, 145226, 290452, 363065, 508291, 580904, 726130, 1016582, 1452260, 2033164, 2541455, 2904520, 4066328, 5082910, 10165820, 20331640]

約数ペア:

[(1, 20331640), (2, 10165820), (4, 5082910), (5, 4066328), (7, 2904520), (8, 2541455), (10, 2033164), (14, 1452260), (20, 1016582), (28, 726130), (35, 580904), (40, 508291), (56, 363065), (70, 290452), (140, 145226), (280, 72613)]