12768640

素因数分解:

$2^7\times 5^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:371

約数の個数: 64

約数和(自身を含む): 31065120

約数和(自身を除く): 18296480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 281, 284, 320, 355, 562, 568, 640, 710, 1124, 1136, 1405, 1420, 2248, 2272, 2810, 2840, 4496, 4544, 5620, 5680, 8992, 9088, 11240, 11360, 17984, 19951, 22480, 22720, 35968, 39902, 44960, 45440, 79804, 89920, 99755, 159608, 179840, 199510, 319216, 399020, 638432, 798040, 1276864, 1596080, 2553728, 3192160, 6384320, 12768640]

約数ペア:

[(1, 12768640), (2, 6384320), (4, 3192160), (5, 2553728), (8, 1596080), (10, 1276864), (16, 798040), (20, 638432), (32, 399020), (40, 319216), (64, 199510), (71, 179840), (80, 159608), (128, 99755), (142, 89920), (160, 79804), (281, 45440), (284, 44960), (320, 39902), (355, 35968), (562, 22720), (568, 22480), (640, 19951), (710, 17984), (1124, 11360), (1136, 11240), (1405, 9088), (1420, 8992), (2248, 5680), (2272, 5620), (2810, 4544), (2840, 4496)]