21800120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{32059}}^1$

素因数の和:32087

約数の個数: 32

約数和(自身を含む): 51937200

約数和(自身を除く): 30137080

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 32059, 64118, 128236, 160295, 256472, 320590, 545003, 641180, 1090006, 1282360, 2180012, 2725015, 4360024, 5450030, 10900060, 21800120]

約数ペア:

[(1, 21800120), (2, 10900060), (4, 5450030), (5, 4360024), (8, 2725015), (10, 2180012), (17, 1282360), (20, 1090006), (34, 641180), (40, 545003), (68, 320590), (85, 256472), (136, 160295), (170, 128236), (340, 64118), (680, 32059)]