21512078

素因数分解:

$2^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 39682944

約数和(自身を除く): 18170866

約数列:

[1, 2, 7, 14, 31, 49, 62, 73, 97, 98, 146, 194, 217, 434, 511, 679, 1022, 1358, 1519, 2263, 3007, 3038, 3577, 4526, 4753, 6014, 7081, 7154, 9506, 14162, 15841, 21049, 31682, 42098, 49567, 99134, 110887, 147343, 219511, 221774, 294686, 346969, 439022, 693938, 1536577, 3073154, 10756039, 21512078]

約数ペア:

[(1, 21512078), (2, 10756039), (7, 3073154), (14, 1536577), (31, 693938), (49, 439022), (62, 346969), (73, 294686), (97, 221774), (98, 219511), (146, 147343), (194, 110887), (217, 99134), (434, 49567), (511, 42098), (679, 31682), (1022, 21049), (1358, 15841), (1519, 14162), (2263, 9506), (3007, 7154), (3038, 7081), (3577, 6014), (4526, 4753)]