21211605

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2213}}^1$

素因数の和:2298

約数の個数: 32

約数和(自身を含む): 38257920

約数和(自身を除く): 17046315

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 355, 639, 1065, 1917, 2213, 3195, 6639, 9585, 11065, 19917, 33195, 59751, 99585, 157123, 298755, 471369, 785615, 1414107, 2356845, 4242321, 7070535, 21211605]

約数ペア:

[(1, 21211605), (3, 7070535), (5, 4242321), (9, 2356845), (15, 1414107), (27, 785615), (45, 471369), (71, 298755), (135, 157123), (213, 99585), (355, 59751), (639, 33195), (1065, 19917), (1917, 11065), (2213, 9585), (3195, 6639)]