21311288

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{947}}^1$

素因数の和:1079

約数の個数: 32

約数和(自身を含む): 41806800

約数和(自身を除く): 20495512

約数列:

[1, 2, 4, 8, 29, 58, 97, 116, 194, 232, 388, 776, 947, 1894, 2813, 3788, 5626, 7576, 11252, 22504, 27463, 54926, 91859, 109852, 183718, 219704, 367436, 734872, 2663911, 5327822, 10655644, 21311288]

約数ペア:

[(1, 21311288), (2, 10655644), (4, 5327822), (8, 2663911), (29, 734872), (58, 367436), (97, 219704), (116, 183718), (194, 109852), (232, 91859), (388, 54926), (776, 27463), (947, 22504), (1894, 11252), (2813, 7576), (3788, 5626)]