20290440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{353}}^1\times {\mathrm{479}}^1$

素因数の和:846

約数の個数: 64

約数和(自身を含む): 61171200

約数和(自身を除く): 40880760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 353, 479, 706, 958, 1059, 1412, 1437, 1765, 1916, 2118, 2395, 2824, 2874, 3530, 3832, 4236, 4790, 5295, 5748, 7060, 7185, 8472, 9580, 10590, 11496, 14120, 14370, 19160, 21180, 28740, 42360, 57480, 169087, 338174, 507261, 676348, 845435, 1014522, 1352696, 1690870, 2029044, 2536305, 3381740, 4058088, 5072610, 6763480, 10145220, 20290440]

約数ペア:

[(1, 20290440), (2, 10145220), (3, 6763480), (4, 5072610), (5, 4058088), (6, 3381740), (8, 2536305), (10, 2029044), (12, 1690870), (15, 1352696), (20, 1014522), (24, 845435), (30, 676348), (40, 507261), (60, 338174), (120, 169087), (353, 57480), (479, 42360), (706, 28740), (958, 21180), (1059, 19160), (1412, 14370), (1437, 14120), (1765, 11496), (1916, 10590), (2118, 9580), (2395, 8472), (2824, 7185), (2874, 7060), (3530, 5748), (3832, 5295), (4236, 4790)]