19788416

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{4987}}^1$

素因数の和:5032

約数の個数: 32

約数和(自身を含む): 40702080

約数和(自身を除く): 20913664

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 496, 992, 1984, 3968, 4987, 9974, 19948, 39896, 79792, 154597, 159584, 309194, 319168, 618388, 638336, 1236776, 2473552, 4947104, 9894208, 19788416]

約数ペア:

[(1, 19788416), (2, 9894208), (4, 4947104), (8, 2473552), (16, 1236776), (31, 638336), (32, 618388), (62, 319168), (64, 309194), (124, 159584), (128, 154597), (248, 79792), (496, 39896), (992, 19948), (1984, 9974), (3968, 4987)]