21514605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{709}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 41850240

約数和(自身を除く): 20335635

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 289, 357, 595, 709, 867, 1445, 1785, 2023, 2127, 3545, 4335, 4963, 6069, 10115, 10635, 12053, 14889, 24815, 30345, 36159, 60265, 74445, 84371, 180795, 204901, 253113, 421855, 614703, 1024505, 1265565, 1434307, 3073515, 4302921, 7171535, 21514605]

約数ペア:

[(1, 21514605), (3, 7171535), (5, 4302921), (7, 3073515), (15, 1434307), (17, 1265565), (21, 1024505), (35, 614703), (51, 421855), (85, 253113), (105, 204901), (119, 180795), (255, 84371), (289, 74445), (357, 60265), (595, 36159), (709, 30345), (867, 24815), (1445, 14889), (1785, 12053), (2023, 10635), (2127, 10115), (3545, 6069), (4335, 4963)]