80208640

素因数分解:

$2^8\times 5^1\times {\mathrm{223}}^1\times {\mathrm{281}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 193673088

約数和(自身を除く): 113464448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 223, 256, 281, 320, 446, 562, 640, 892, 1115, 1124, 1280, 1405, 1784, 2230, 2248, 2810, 3568, 4460, 4496, 5620, 7136, 8920, 8992, 11240, 14272, 17840, 17984, 22480, 28544, 35680, 35968, 44960, 57088, 62663, 71360, 71936, 89920, 125326, 142720, 179840, 250652, 285440, 313315, 359680, 501304, 626630, 1002608, 1253260, 2005216, 2506520, 4010432, 5013040, 8020864, 10026080, 16041728, 20052160, 40104320, 80208640]

約数ペア:

[(1, 80208640), (2, 40104320), (4, 20052160), (5, 16041728), (8, 10026080), (10, 8020864), (16, 5013040), (20, 4010432), (32, 2506520), (40, 2005216), (64, 1253260), (80, 1002608), (128, 626630), (160, 501304), (223, 359680), (256, 313315), (281, 285440), (320, 250652), (446, 179840), (562, 142720), (640, 125326), (892, 89920), (1115, 71936), (1124, 71360), (1280, 62663), (1405, 57088), (1784, 44960), (2230, 35968), (2248, 35680), (2810, 28544), (3568, 22480), (4460, 17984), (4496, 17840), (5620, 14272), (7136, 11240), (8920, 8992)]