21009429

素因数分解:

$3^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1249}}^1$

素因数の和:1354

約数の個数: 32

約数和(自身を含む): 36000000

約数和(自身を除く): 14990571

約数列:

[1, 3, 7, 9, 21, 27, 63, 89, 189, 267, 623, 801, 1249, 1869, 2403, 3747, 5607, 8743, 11241, 16821, 26229, 33723, 78687, 111161, 236061, 333483, 778127, 1000449, 2334381, 3001347, 7003143, 21009429]

約数ペア:

[(1, 21009429), (3, 7003143), (7, 3001347), (9, 2334381), (21, 1000449), (27, 778127), (63, 333483), (89, 236061), (189, 111161), (267, 78687), (623, 33723), (801, 26229), (1249, 16821), (1869, 11241), (2403, 8743), (3747, 5607)]