87498920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53353}}^1$

素因数の和:53405

約数の個数: 32

約数和(自身を含む): 201678120

約数和(自身を除く): 114179200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 53353, 106706, 213412, 266765, 426824, 533530, 1067060, 2134120, 2187473, 4374946, 8749892, 10937365, 17499784, 21874730, 43749460, 87498920]

約数ペア:

[(1, 87498920), (2, 43749460), (4, 21874730), (5, 17499784), (8, 10937365), (10, 8749892), (20, 4374946), (40, 2187473), (41, 2134120), (82, 1067060), (164, 533530), (205, 426824), (328, 266765), (410, 213412), (820, 106706), (1640, 53353)]