21387590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3433}}^1$

素因数の和:3536

約数の個数: 32

約数和(自身を含む): 44504640

約数和(自身を除く): 23117050

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 890, 1246, 3115, 3433, 6230, 6866, 17165, 24031, 34330, 48062, 120155, 240310, 305537, 611074, 1527685, 2138759, 3055370, 4277518, 10693795, 21387590]

約数ペア:

[(1, 21387590), (2, 10693795), (5, 4277518), (7, 3055370), (10, 2138759), (14, 1527685), (35, 611074), (70, 305537), (89, 240310), (178, 120155), (445, 48062), (623, 34330), (890, 24031), (1246, 17165), (3115, 6866), (3433, 6230)]