21029085

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2$

素因数の和:73

約数の個数: 144

約数和(自身を含む): 50397120

約数和(自身を除く): 29368035

約数列:

[1, 3, 5, 7, 9, 11, 15, 17, 21, 27, 33, 35, 45, 49, 51, 55, 63, 77, 85, 99, 105, 119, 135, 147, 153, 165, 187, 189, 231, 245, 255, 289, 297, 315, 357, 385, 441, 459, 495, 539, 561, 595, 693, 735, 765, 833, 867, 935, 945, 1071, 1155, 1309, 1323, 1445, 1485, 1617, 1683, 1785, 2023, 2079, 2205, 2295, 2499, 2601, 2695, 2805, 3179, 3213, 3465, 3927, 4165, 4335, 4851, 5049, 5355, 6069, 6545, 6615, 7497, 7803, 8085, 8415, 9163, 9537, 10115, 10395, 11781, 12495, 13005, 14161, 14553, 15895, 16065, 18207, 19635, 22253, 22491, 24255, 25245, 27489, 28611, 30345, 35343, 37485, 39015, 42483, 45815, 47685, 54621, 58905, 66759, 70805, 72765, 82467, 85833, 91035, 111265, 112455, 127449, 137445, 143055, 155771, 176715, 200277, 212415, 247401, 273105, 333795, 382347, 412335, 429165, 467313, 600831, 637245, 778855, 1001385, 1237005, 1401939, 1911735, 2336565, 3004155, 4205817, 7009695, 21029085]

約数ペア:

[(1, 21029085), (3, 7009695), (5, 4205817), (7, 3004155), (9, 2336565), (11, 1911735), (15, 1401939), (17, 1237005), (21, 1001385), (27, 778855), (33, 637245), (35, 600831), (45, 467313), (49, 429165), (51, 412335), (55, 382347), (63, 333795), (77, 273105), (85, 247401), (99, 212415), (105, 200277), (119, 176715), (135, 155771), (147, 143055), (153, 137445), (165, 127449), (187, 112455), (189, 111265), (231, 91035), (245, 85833), (255, 82467), (289, 72765), (297, 70805), (315, 66759), (357, 58905), (385, 54621), (441, 47685), (459, 45815), (495, 42483), (539, 39015), (561, 37485), (595, 35343), (693, 30345), (735, 28611), (765, 27489), (833, 25245), (867, 24255), (935, 22491), (945, 22253), (1071, 19635), (1155, 18207), (1309, 16065), (1323, 15895), (1445, 14553), (1485, 14161), (1617, 13005), (1683, 12495), (1785, 11781), (2023, 10395), (2079, 10115), (2205, 9537), (2295, 9163), (2499, 8415), (2601, 8085), (2695, 7803), (2805, 7497), (3179, 6615), (3213, 6545), (3465, 6069), (3927, 5355), (4165, 5049), (4335, 4851)]