28019840

素因数分解:

$2^7\times 5^1\times {\mathrm{43781}}^1$

素因数の和:43800

約数の個数: 32

約数和(自身を含む): 66986460

約数和(自身を除く): 38966620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 43781, 87562, 175124, 218905, 350248, 437810, 700496, 875620, 1400992, 1751240, 2801984, 3502480, 5603968, 7004960, 14009920, 28019840]

約数ペア:

[(1, 28019840), (2, 14009920), (4, 7004960), (5, 5603968), (8, 3502480), (10, 2801984), (16, 1751240), (20, 1400992), (32, 875620), (40, 700496), (64, 437810), (80, 350248), (128, 218905), (160, 175124), (320, 87562), (640, 43781)]