21372128

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{2311}}^1$

素因数の和:2355

約数の個数: 36

約数和(自身を含む): 44716392

約数和(自身を除く): 23344264

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 272, 289, 544, 578, 1156, 2311, 2312, 4622, 4624, 9244, 9248, 18488, 36976, 39287, 73952, 78574, 157148, 314296, 628592, 667879, 1257184, 1335758, 2671516, 5343032, 10686064, 21372128]

約数ペア:

[(1, 21372128), (2, 10686064), (4, 5343032), (8, 2671516), (16, 1335758), (17, 1257184), (32, 667879), (34, 628592), (68, 314296), (136, 157148), (272, 78574), (289, 73952), (544, 39287), (578, 36976), (1156, 18488), (2311, 9248), (2312, 9244), (4622, 4624)]