65439280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:406

約数の個数: 80

約数和(自身を含む): 158614848

約数和(自身を除く): 93175568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 71, 80, 82, 142, 164, 205, 281, 284, 328, 355, 410, 562, 568, 656, 710, 820, 1124, 1136, 1405, 1420, 1640, 2248, 2810, 2840, 2911, 3280, 4496, 5620, 5680, 5822, 11240, 11521, 11644, 14555, 19951, 22480, 23042, 23288, 29110, 39902, 46084, 46576, 57605, 58220, 79804, 92168, 99755, 115210, 116440, 159608, 184336, 199510, 230420, 232880, 319216, 399020, 460840, 798040, 817991, 921680, 1596080, 1635982, 3271964, 4089955, 6543928, 8179910, 13087856, 16359820, 32719640, 65439280]

約数ペア:

[(1, 65439280), (2, 32719640), (4, 16359820), (5, 13087856), (8, 8179910), (10, 6543928), (16, 4089955), (20, 3271964), (40, 1635982), (41, 1596080), (71, 921680), (80, 817991), (82, 798040), (142, 460840), (164, 399020), (205, 319216), (281, 232880), (284, 230420), (328, 199510), (355, 184336), (410, 159608), (562, 116440), (568, 115210), (656, 99755), (710, 92168), (820, 79804), (1124, 58220), (1136, 57605), (1405, 46576), (1420, 46084), (1640, 39902), (2248, 29110), (2810, 23288), (2840, 23042), (2911, 22480), (3280, 19951), (4496, 14555), (5620, 11644), (5680, 11521), (5822, 11240)]