21372849

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:542

約数の個数: 32

約数和(自身を含む): 33264000

約数和(自身を除く): 11891151

約数列:

[1, 3, 9, 27, 41, 43, 123, 129, 369, 387, 449, 1107, 1161, 1347, 1763, 4041, 5289, 12123, 15867, 18409, 19307, 47601, 55227, 57921, 165681, 173763, 497043, 521289, 791587, 2374761, 7124283, 21372849]

約数ペア:

[(1, 21372849), (3, 7124283), (9, 2374761), (27, 791587), (41, 521289), (43, 497043), (123, 173763), (129, 165681), (369, 57921), (387, 55227), (449, 47601), (1107, 19307), (1161, 18409), (1347, 15867), (1763, 12123), (4041, 5289)]