20987312

素因数分解:

$2^4\times {\mathrm{181}}^1\times {\mathrm{7247}}^1$

素因数の和:7436

約数の個数: 20

約数和(自身を含む): 40893216

約数和(自身を除く): 19905904

約数列:

[1, 2, 4, 8, 16, 181, 362, 724, 1448, 2896, 7247, 14494, 28988, 57976, 115952, 1311707, 2623414, 5246828, 10493656, 20987312]

約数ペア:

[(1, 20987312), (2, 10493656), (4, 5246828), (8, 2623414), (16, 1311707), (181, 115952), (362, 57976), (724, 28988), (1448, 14494), (2896, 7247)]