21905010

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:272

約数の個数: 96

約数和(自身を含む): 61326720

約数和(自身を除く): 39421710

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 85, 90, 102, 103, 139, 153, 170, 206, 255, 278, 306, 309, 417, 510, 515, 618, 695, 765, 834, 927, 1030, 1251, 1390, 1530, 1545, 1751, 1854, 2085, 2363, 2502, 3090, 3502, 4170, 4635, 4726, 5253, 6255, 7089, 8755, 9270, 10506, 11815, 12510, 14178, 14317, 15759, 17510, 21267, 23630, 26265, 28634, 31518, 35445, 42534, 42951, 52530, 70890, 71585, 78795, 85902, 106335, 128853, 143170, 157590, 212670, 214755, 243389, 257706, 429510, 486778, 644265, 730167, 1216945, 1288530, 1460334, 2190501, 2433890, 3650835, 4381002, 7301670, 10952505, 21905010]

約数ペア:

[(1, 21905010), (2, 10952505), (3, 7301670), (5, 4381002), (6, 3650835), (9, 2433890), (10, 2190501), (15, 1460334), (17, 1288530), (18, 1216945), (30, 730167), (34, 644265), (45, 486778), (51, 429510), (85, 257706), (90, 243389), (102, 214755), (103, 212670), (139, 157590), (153, 143170), (170, 128853), (206, 106335), (255, 85902), (278, 78795), (306, 71585), (309, 70890), (417, 52530), (510, 42951), (515, 42534), (618, 35445), (695, 31518), (765, 28634), (834, 26265), (927, 23630), (1030, 21267), (1251, 17510), (1390, 15759), (1530, 14317), (1545, 14178), (1751, 12510), (1854, 11815), (2085, 10506), (2363, 9270), (2502, 8755), (3090, 7089), (3502, 6255), (4170, 5253), (4635, 4726)]