21662060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{431}}^1$

素因数の和:806

約数の個数: 48

約数和(自身を含む): 52254720

約数和(自身を除く): 30592660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 359, 431, 718, 862, 1436, 1724, 1795, 2155, 2513, 3017, 3590, 4310, 5026, 6034, 7180, 8620, 10052, 12068, 12565, 15085, 25130, 30170, 50260, 60340, 154729, 309458, 618916, 773645, 1083103, 1547290, 2166206, 3094580, 4332412, 5415515, 10831030, 21662060]

約数ペア:

[(1, 21662060), (2, 10831030), (4, 5415515), (5, 4332412), (7, 3094580), (10, 2166206), (14, 1547290), (20, 1083103), (28, 773645), (35, 618916), (70, 309458), (140, 154729), (359, 60340), (431, 50260), (718, 30170), (862, 25130), (1436, 15085), (1724, 12565), (1795, 12068), (2155, 10052), (2513, 8620), (3017, 7180), (3590, 6034), (4310, 5026)]