21759040

素因数分解:

$2^6\times 5^1\times {\mathrm{97}}^1\times {\mathrm{701}}^1$

素因数の和:815

約数の個数: 56

約数和(自身を含む): 52422552

約数和(自身を除く): 30663512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 160, 194, 320, 388, 485, 701, 776, 970, 1402, 1552, 1940, 2804, 3104, 3505, 3880, 5608, 6208, 7010, 7760, 11216, 14020, 15520, 22432, 28040, 31040, 44864, 56080, 67997, 112160, 135994, 224320, 271988, 339985, 543976, 679970, 1087952, 1359940, 2175904, 2719880, 4351808, 5439760, 10879520, 21759040]

約数ペア:

[(1, 21759040), (2, 10879520), (4, 5439760), (5, 4351808), (8, 2719880), (10, 2175904), (16, 1359940), (20, 1087952), (32, 679970), (40, 543976), (64, 339985), (80, 271988), (97, 224320), (160, 135994), (194, 112160), (320, 67997), (388, 56080), (485, 44864), (701, 31040), (776, 28040), (970, 22432), (1402, 15520), (1552, 14020), (1940, 11216), (2804, 7760), (3104, 7010), (3505, 6208), (3880, 5608)]