18401985

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{6491}}^1$

素因数の和:6515

約数の個数: 40

約数和(自身を含む): 37705536

約数和(自身を除く): 19303551

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 6491, 19473, 32455, 45437, 58419, 97365, 136311, 175257, 227185, 292095, 408933, 525771, 681555, 876285, 1226799, 2044665, 2628855, 3680397, 6133995, 18401985]

約数ペア:

[(1, 18401985), (3, 6133995), (5, 3680397), (7, 2628855), (9, 2044665), (15, 1226799), (21, 876285), (27, 681555), (35, 525771), (45, 408933), (63, 292095), (81, 227185), (105, 175257), (135, 136311), (189, 97365), (315, 58419), (405, 45437), (567, 32455), (945, 19473), (2835, 6491)]