21112785

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3637}}^1$

素因数の和:3694

約数の個数: 32

約数和(自身を含む): 38417280

約数和(自身を除く): 17304495

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3637, 5805, 10911, 18185, 32733, 54555, 98199, 156391, 163665, 469173, 490995, 781955, 1407519, 2345865, 4222557, 7037595, 21112785]

約数ペア:

[(1, 21112785), (3, 7037595), (5, 4222557), (9, 2345865), (15, 1407519), (27, 781955), (43, 490995), (45, 469173), (129, 163665), (135, 156391), (215, 98199), (387, 54555), (645, 32733), (1161, 18185), (1935, 10911), (3637, 5805)]