21135735

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2269}}^1$

素因数の和:2309

約数の個数: 40

約数和(自身を含む): 39552480

約数和(自身を除く): 18416745

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2269, 3105, 6807, 9315, 11345, 20421, 34035, 52187, 61263, 102105, 156561, 183789, 260935, 306315, 469683, 782805, 918945, 1409049, 2348415, 4227147, 7045245, 21135735]

約数ペア:

[(1, 21135735), (3, 7045245), (5, 4227147), (9, 2348415), (15, 1409049), (23, 918945), (27, 782805), (45, 469683), (69, 306315), (81, 260935), (115, 183789), (135, 156561), (207, 102105), (345, 61263), (405, 52187), (621, 34035), (1035, 20421), (1863, 11345), (2269, 9315), (3105, 6807)]