18874947

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:137

約数の個数: 64

約数和(自身を含む): 33868800

約数和(自身を除く): 14993853

約数列:

[1, 3, 7, 13, 17, 21, 39, 49, 51, 83, 91, 119, 147, 221, 249, 273, 343, 357, 581, 637, 663, 833, 1029, 1079, 1411, 1547, 1743, 1911, 2499, 3237, 4067, 4233, 4459, 4641, 5831, 7553, 9877, 10829, 12201, 13377, 17493, 18343, 22659, 28469, 29631, 32487, 52871, 55029, 69139, 75803, 85407, 128401, 158613, 207417, 227409, 370097, 385203, 483973, 898807, 1110291, 1451919, 2696421, 6291649, 18874947]

約数ペア:

[(1, 18874947), (3, 6291649), (7, 2696421), (13, 1451919), (17, 1110291), (21, 898807), (39, 483973), (49, 385203), (51, 370097), (83, 227409), (91, 207417), (119, 158613), (147, 128401), (221, 85407), (249, 75803), (273, 69139), (343, 55029), (357, 52871), (581, 32487), (637, 29631), (663, 28469), (833, 22659), (1029, 18343), (1079, 17493), (1411, 13377), (1547, 12201), (1743, 10829), (1911, 9877), (2499, 7553), (3237, 5831), (4067, 4641), (4233, 4459)]