20346740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{401}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 44573760

約数和(自身を除く): 24227020

約数列:

[1, 2, 4, 5, 10, 20, 43, 59, 86, 118, 172, 215, 236, 295, 401, 430, 590, 802, 860, 1180, 1604, 2005, 2537, 4010, 5074, 8020, 10148, 12685, 17243, 23659, 25370, 34486, 47318, 50740, 68972, 86215, 94636, 118295, 172430, 236590, 344860, 473180, 1017337, 2034674, 4069348, 5086685, 10173370, 20346740]

約数ペア:

[(1, 20346740), (2, 10173370), (4, 5086685), (5, 4069348), (10, 2034674), (20, 1017337), (43, 473180), (59, 344860), (86, 236590), (118, 172430), (172, 118295), (215, 94636), (236, 86215), (295, 68972), (401, 50740), (430, 47318), (590, 34486), (802, 25370), (860, 23659), (1180, 17243), (1604, 12685), (2005, 10148), (2537, 8020), (4010, 5074)]