20586915

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1583}}^1$

素因数の和:1628

約数の個数: 36

約数和(自身を含む): 37930464

約数和(自身を除く): 17343549

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 1583, 2601, 4335, 4749, 7915, 13005, 14247, 23745, 26911, 71235, 80733, 134555, 242199, 403665, 457487, 1210995, 1372461, 2287435, 4117383, 6862305, 20586915]

約数ペア:

[(1, 20586915), (3, 6862305), (5, 4117383), (9, 2287435), (15, 1372461), (17, 1210995), (45, 457487), (51, 403665), (85, 242199), (153, 134555), (255, 80733), (289, 71235), (765, 26911), (867, 23745), (1445, 14247), (1583, 13005), (2601, 7915), (4335, 4749)]