21304305

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{223}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 40674816

約数和(自身を除く): 19370511

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 193, 223, 495, 579, 669, 965, 1115, 1737, 2007, 2123, 2453, 2895, 3345, 6369, 7359, 8685, 10035, 10615, 12265, 19107, 22077, 31845, 36795, 43039, 95535, 110385, 129117, 215195, 387351, 473429, 645585, 1420287, 1936755, 2367145, 4260861, 7101435, 21304305]

約数ペア:

[(1, 21304305), (3, 7101435), (5, 4260861), (9, 2367145), (11, 1936755), (15, 1420287), (33, 645585), (45, 473429), (55, 387351), (99, 215195), (165, 129117), (193, 110385), (223, 95535), (495, 43039), (579, 36795), (669, 31845), (965, 22077), (1115, 19107), (1737, 12265), (2007, 10615), (2123, 10035), (2453, 8685), (2895, 7359), (3345, 6369)]