20970488

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{577}}^1$

素因数の和:660

約数の個数: 64

約数和(自身を含む): 49939200

約数和(自身を除く): 28968712

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 59, 77, 88, 118, 154, 236, 308, 413, 472, 577, 616, 649, 826, 1154, 1298, 1652, 2308, 2596, 3304, 4039, 4543, 4616, 5192, 6347, 8078, 9086, 12694, 16156, 18172, 25388, 32312, 34043, 36344, 44429, 50776, 68086, 88858, 136172, 177716, 238301, 272344, 355432, 374473, 476602, 748946, 953204, 1497892, 1906408, 2621311, 2995784, 5242622, 10485244, 20970488]

約数ペア:

[(1, 20970488), (2, 10485244), (4, 5242622), (7, 2995784), (8, 2621311), (11, 1906408), (14, 1497892), (22, 953204), (28, 748946), (44, 476602), (56, 374473), (59, 355432), (77, 272344), (88, 238301), (118, 177716), (154, 136172), (236, 88858), (308, 68086), (413, 50776), (472, 44429), (577, 36344), (616, 34043), (649, 32312), (826, 25388), (1154, 18172), (1298, 16156), (1652, 12694), (2308, 9086), (2596, 8078), (3304, 6347), (4039, 5192), (4543, 4616)]