19783936

素因数分解:

$2^8\times {\mathrm{109}}^1\times {\mathrm{709}}^1$

素因数の和:834

約数の個数: 36

約数和(自身を含む): 39909100

約数和(自身を除く): 20125164

約数列:

[1, 2, 4, 8, 16, 32, 64, 109, 128, 218, 256, 436, 709, 872, 1418, 1744, 2836, 3488, 5672, 6976, 11344, 13952, 22688, 27904, 45376, 77281, 90752, 154562, 181504, 309124, 618248, 1236496, 2472992, 4945984, 9891968, 19783936]

約数ペア:

[(1, 19783936), (2, 9891968), (4, 4945984), (8, 2472992), (16, 1236496), (32, 618248), (64, 309124), (109, 181504), (128, 154562), (218, 90752), (256, 77281), (436, 45376), (709, 27904), (872, 22688), (1418, 13952), (1744, 11344), (2836, 6976), (3488, 5672)]