128512839

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^2\times {\mathrm{739}}^1$

素因数の和:789

約数の個数: 48

約数和(自身を含む): 216672000

約数和(自身を除く): 88159161

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 169, 273, 343, 507, 637, 739, 1029, 1183, 1911, 2217, 3549, 4459, 5173, 8281, 9607, 13377, 15519, 24843, 28821, 36211, 57967, 67249, 108633, 124891, 173901, 201747, 253477, 374673, 470743, 760431, 874237, 1412229, 2622711, 3295201, 6119659, 9885603, 18358977, 42837613, 128512839]

約数ペア:

[(1, 128512839), (3, 42837613), (7, 18358977), (13, 9885603), (21, 6119659), (39, 3295201), (49, 2622711), (91, 1412229), (147, 874237), (169, 760431), (273, 470743), (343, 374673), (507, 253477), (637, 201747), (739, 173901), (1029, 124891), (1183, 108633), (1911, 67249), (2217, 57967), (3549, 36211), (4459, 28821), (5173, 24843), (8281, 15519), (9607, 13377)]