21040960

素因数分解:

$2^6\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1399}}^1$

素因数の和:1463

約数の個数: 56

約数和(自身を含む): 51206400

約数和(自身を除く): 30165440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 160, 188, 235, 320, 376, 470, 752, 940, 1399, 1504, 1880, 2798, 3008, 3760, 5596, 6995, 7520, 11192, 13990, 15040, 22384, 27980, 44768, 55960, 65753, 89536, 111920, 131506, 223840, 263012, 328765, 447680, 526024, 657530, 1052048, 1315060, 2104096, 2630120, 4208192, 5260240, 10520480, 21040960]

約数ペア:

[(1, 21040960), (2, 10520480), (4, 5260240), (5, 4208192), (8, 2630120), (10, 2104096), (16, 1315060), (20, 1052048), (32, 657530), (40, 526024), (47, 447680), (64, 328765), (80, 263012), (94, 223840), (160, 131506), (188, 111920), (235, 89536), (320, 65753), (376, 55960), (470, 44768), (752, 27980), (940, 22384), (1399, 15040), (1504, 13990), (1880, 11192), (2798, 7520), (3008, 6995), (3760, 5596)]