20730735

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3011}}^1$

素因数の和:3045

約数の個数: 40

約数和(自身を含む): 39360816

約数和(自身を除く): 18630081

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 3011, 6885, 9033, 15055, 27099, 45165, 51187, 81297, 135495, 153561, 243891, 255935, 406485, 460683, 767805, 1219455, 1382049, 2303415, 4146147, 6910245, 20730735]

約数ペア:

[(1, 20730735), (3, 6910245), (5, 4146147), (9, 2303415), (15, 1382049), (17, 1219455), (27, 767805), (45, 460683), (51, 406485), (81, 255935), (85, 243891), (135, 153561), (153, 135495), (255, 81297), (405, 51187), (459, 45165), (765, 27099), (1377, 15055), (2295, 9033), (3011, 6885)]