21492819

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 34777600

約数和(自身を除く): 13284781

約数列:

[1, 3, 9, 19, 37, 43, 57, 79, 111, 129, 171, 237, 333, 387, 703, 711, 817, 1501, 1591, 2109, 2451, 2923, 3397, 4503, 4773, 6327, 7353, 8769, 10191, 13509, 14319, 26307, 30229, 30573, 55537, 64543, 90687, 125689, 166611, 193629, 272061, 377067, 499833, 580887, 1131201, 2388091, 7164273, 21492819]

約数ペア:

[(1, 21492819), (3, 7164273), (9, 2388091), (19, 1131201), (37, 580887), (43, 499833), (57, 377067), (79, 272061), (111, 193629), (129, 166611), (171, 125689), (237, 90687), (333, 64543), (387, 55537), (703, 30573), (711, 30229), (817, 26307), (1501, 14319), (1591, 13509), (2109, 10191), (2451, 8769), (2923, 7353), (3397, 6327), (4503, 4773)]