21459015

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28051}}^1$

素因数の和:28079

約数の個数: 24

約数和(自身を含む): 39385008

約数和(自身を除く): 17925993

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28051, 84153, 140255, 252459, 420765, 476867, 1262295, 1430601, 2384335, 4291803, 7153005, 21459015]

約数ペア:

[(1, 21459015), (3, 7153005), (5, 4291803), (9, 2384335), (15, 1430601), (17, 1262295), (45, 476867), (51, 420765), (85, 252459), (153, 140255), (255, 84153), (765, 28051)]