21444444

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1979}}^1$

素因数の和:2039

約数の個数: 72

約数和(自身を含む): 63423360

約数和(自身を除く): 41978916

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 43, 63, 84, 86, 126, 129, 172, 252, 258, 301, 387, 516, 602, 774, 903, 1204, 1548, 1806, 1979, 2709, 3612, 3958, 5418, 5937, 7916, 10836, 11874, 13853, 17811, 23748, 27706, 35622, 41559, 55412, 71244, 83118, 85097, 124677, 166236, 170194, 249354, 255291, 340388, 498708, 510582, 595679, 765873, 1021164, 1191358, 1531746, 1787037, 2382716, 3063492, 3574074, 5361111, 7148148, 10722222, 21444444]

約数ペア:

[(1, 21444444), (2, 10722222), (3, 7148148), (4, 5361111), (6, 3574074), (7, 3063492), (9, 2382716), (12, 1787037), (14, 1531746), (18, 1191358), (21, 1021164), (28, 765873), (36, 595679), (42, 510582), (43, 498708), (63, 340388), (84, 255291), (86, 249354), (126, 170194), (129, 166236), (172, 124677), (252, 85097), (258, 83118), (301, 71244), (387, 55412), (516, 41559), (602, 35622), (774, 27706), (903, 23748), (1204, 17811), (1548, 13853), (1806, 11874), (1979, 10836), (2709, 7916), (3612, 5937), (3958, 5418)]