28730120

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2731}}^1$

素因数の和:3005

約数の個数: 32

約数和(自身を含む): 64912320

約数和(自身を除く): 36182200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 2731, 5260, 5462, 10520, 10924, 13655, 21848, 27310, 54620, 109240, 718253, 1436506, 2873012, 3591265, 5746024, 7182530, 14365060, 28730120]

約数ペア:

[(1, 28730120), (2, 14365060), (4, 7182530), (5, 5746024), (8, 3591265), (10, 2873012), (20, 1436506), (40, 718253), (263, 109240), (526, 54620), (1052, 27310), (1315, 21848), (2104, 13655), (2630, 10924), (2731, 10520), (5260, 5462)]