21878235

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9533}}^1$

素因数の和:9564

約数の個数: 32

約数和(自身を含む): 41186880

約数和(自身を除く): 19308645

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9533, 28599, 47665, 85797, 142995, 162061, 257391, 428985, 486183, 810305, 1286955, 1458549, 2430915, 4375647, 7292745, 21878235]

約数ペア:

[(1, 21878235), (3, 7292745), (5, 4375647), (9, 2430915), (15, 1458549), (17, 1286955), (27, 810305), (45, 486183), (51, 428985), (85, 257391), (135, 162061), (153, 142995), (255, 85797), (459, 47665), (765, 28599), (2295, 9533)]