21724245

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 39262080

約数和(自身を除く): 17537835

約数列:

[1, 3, 5, 9, 15, 43, 45, 103, 109, 129, 215, 309, 327, 387, 515, 545, 645, 927, 981, 1545, 1635, 1935, 4429, 4635, 4687, 4905, 11227, 13287, 14061, 22145, 23435, 33681, 39861, 42183, 56135, 66435, 70305, 101043, 168405, 199305, 210915, 482761, 505215, 1448283, 2413805, 4344849, 7241415, 21724245]

約数ペア:

[(1, 21724245), (3, 7241415), (5, 4344849), (9, 2413805), (15, 1448283), (43, 505215), (45, 482761), (103, 210915), (109, 199305), (129, 168405), (215, 101043), (309, 70305), (327, 66435), (387, 56135), (515, 42183), (545, 39861), (645, 33681), (927, 23435), (981, 22145), (1545, 14061), (1635, 13287), (1935, 11227), (4429, 4905), (4635, 4687)]