21241605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 43296768

約数和(自身を除く): 22055163

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 53, 55, 77, 105, 159, 165, 231, 265, 347, 371, 385, 583, 795, 1041, 1113, 1155, 1735, 1749, 1855, 2429, 2915, 3817, 4081, 5205, 5565, 7287, 8745, 11451, 12145, 12243, 18391, 19085, 20405, 26719, 36435, 55173, 57255, 61215, 80157, 91955, 128737, 133595, 202301, 275865, 386211, 400785, 606903, 643685, 1011505, 1416107, 1931055, 3034515, 4248321, 7080535, 21241605]

約数ペア:

[(1, 21241605), (3, 7080535), (5, 4248321), (7, 3034515), (11, 1931055), (15, 1416107), (21, 1011505), (33, 643685), (35, 606903), (53, 400785), (55, 386211), (77, 275865), (105, 202301), (159, 133595), (165, 128737), (231, 91955), (265, 80157), (347, 61215), (371, 57255), (385, 55173), (583, 36435), (795, 26719), (1041, 20405), (1113, 19085), (1155, 18391), (1735, 12243), (1749, 12145), (1855, 11451), (2429, 8745), (2915, 7287), (3817, 5565), (4081, 5205)]