18893812

素因数分解:

$2^2\times 7^3\times {\mathrm{47}}^1\times {\mathrm{293}}^1$

素因数の和:365

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 20619788

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 94, 98, 188, 196, 293, 329, 343, 586, 658, 686, 1172, 1316, 1372, 2051, 2303, 4102, 4606, 8204, 9212, 13771, 14357, 16121, 27542, 28714, 32242, 55084, 57428, 64484, 96397, 100499, 192794, 200998, 385588, 401996, 674779, 1349558, 2699116, 4723453, 9446906, 18893812]

約数ペア:

[(1, 18893812), (2, 9446906), (4, 4723453), (7, 2699116), (14, 1349558), (28, 674779), (47, 401996), (49, 385588), (94, 200998), (98, 192794), (188, 100499), (196, 96397), (293, 64484), (329, 57428), (343, 55084), (586, 32242), (658, 28714), (686, 27542), (1172, 16121), (1316, 14357), (1372, 13771), (2051, 9212), (2303, 8204), (4102, 4606)]