16689580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{257}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 37449216

約数和(自身を除く): 20759636

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 191, 257, 340, 382, 514, 764, 955, 1028, 1285, 1910, 2570, 3247, 3820, 4369, 5140, 6494, 8738, 12988, 16235, 17476, 21845, 32470, 43690, 49087, 64940, 87380, 98174, 196348, 245435, 490870, 834479, 981740, 1668958, 3337916, 4172395, 8344790, 16689580]

約数ペア:

[(1, 16689580), (2, 8344790), (4, 4172395), (5, 3337916), (10, 1668958), (17, 981740), (20, 834479), (34, 490870), (68, 245435), (85, 196348), (170, 98174), (191, 87380), (257, 64940), (340, 49087), (382, 43690), (514, 32470), (764, 21845), (955, 17476), (1028, 16235), (1285, 12988), (1910, 8738), (2570, 6494), (3247, 5140), (3820, 4369)]