21127316

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{263}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 44943360

約数和(自身を除く): 23816044

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 151, 263, 266, 302, 526, 532, 604, 1052, 1057, 1841, 2114, 2869, 3682, 4228, 4997, 5738, 7364, 9994, 11476, 19988, 20083, 34979, 39713, 40166, 69958, 79426, 80332, 139916, 158852, 277991, 555982, 754547, 1111964, 1509094, 3018188, 5281829, 10563658, 21127316]

約数ペア:

[(1, 21127316), (2, 10563658), (4, 5281829), (7, 3018188), (14, 1509094), (19, 1111964), (28, 754547), (38, 555982), (76, 277991), (133, 158852), (151, 139916), (263, 80332), (266, 79426), (302, 69958), (526, 40166), (532, 39713), (604, 34979), (1052, 20083), (1057, 19988), (1841, 11476), (2114, 9994), (2869, 7364), (3682, 5738), (4228, 4997)]