18340448

素因数分解:

$2^5\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1997}}^1$

素因数の和:2055

約数の個数: 48

約数和(自身を含む): 42293664

約数和(自身を除く): 23953216

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 82, 112, 164, 224, 287, 328, 574, 656, 1148, 1312, 1997, 2296, 3994, 4592, 7988, 9184, 13979, 15976, 27958, 31952, 55916, 63904, 81877, 111832, 163754, 223664, 327508, 447328, 573139, 655016, 1146278, 1310032, 2292556, 2620064, 4585112, 9170224, 18340448]

約数ペア:

[(1, 18340448), (2, 9170224), (4, 4585112), (7, 2620064), (8, 2292556), (14, 1310032), (16, 1146278), (28, 655016), (32, 573139), (41, 447328), (56, 327508), (82, 223664), (112, 163754), (164, 111832), (224, 81877), (287, 63904), (328, 55916), (574, 31952), (656, 27958), (1148, 15976), (1312, 13979), (1997, 9184), (2296, 7988), (3994, 4592)]