20144745

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1549}}^1$

素因数の和:1594

約数の個数: 36

約数和(自身を含む): 37116300

約数和(自身を除く): 16971555

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 1549, 2601, 4335, 4647, 7745, 13005, 13941, 23235, 26333, 69705, 78999, 131665, 236997, 394995, 447661, 1184985, 1342983, 2238305, 4028949, 6714915, 20144745]

約数ペア:

[(1, 20144745), (3, 6714915), (5, 4028949), (9, 2238305), (15, 1342983), (17, 1184985), (45, 447661), (51, 394995), (85, 236997), (153, 131665), (255, 78999), (289, 69705), (765, 26333), (867, 23235), (1445, 13941), (1549, 13005), (2601, 7745), (4335, 4647)]