16639360

素因数分解:

$2^7\times 5^1\times {\mathrm{25999}}^1$

素因数の和:26018

約数の個数: 32

約数和(自身を含む): 39780000

約数和(自身を除く): 23140640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 25999, 51998, 103996, 129995, 207992, 259990, 415984, 519980, 831968, 1039960, 1663936, 2079920, 3327872, 4159840, 8319680, 16639360]

約数ペア:

[(1, 16639360), (2, 8319680), (4, 4159840), (5, 3327872), (8, 2079920), (10, 1663936), (16, 1039960), (20, 831968), (32, 519980), (40, 415984), (64, 259990), (80, 207992), (128, 129995), (160, 103996), (320, 51998), (640, 25999)]