21189368

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1987}}^1$

素因数の和:2067

約数の個数: 32

約数和(自身を含む): 41986560

約数和(自身を除く): 20797192

約数列:

[1, 2, 4, 8, 31, 43, 62, 86, 124, 172, 248, 344, 1333, 1987, 2666, 3974, 5332, 7948, 10664, 15896, 61597, 85441, 123194, 170882, 246388, 341764, 492776, 683528, 2648671, 5297342, 10594684, 21189368]

約数ペア:

[(1, 21189368), (2, 10594684), (4, 5297342), (8, 2648671), (31, 683528), (43, 492776), (62, 341764), (86, 246388), (124, 170882), (172, 123194), (248, 85441), (344, 61597), (1333, 15896), (1987, 10664), (2666, 7948), (3974, 5332)]