80381776

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{167}}^1\times {\mathrm{449}}^1$

素因数の和:691

約数の個数: 40

約数和(自身を含む): 159364800

約数和(自身を除く): 78983024

約数列:

[1, 2, 4, 8, 16, 67, 134, 167, 268, 334, 449, 536, 668, 898, 1072, 1336, 1796, 2672, 3592, 7184, 11189, 22378, 30083, 44756, 60166, 74983, 89512, 120332, 149966, 179024, 240664, 299932, 481328, 599864, 1199728, 5023861, 10047722, 20095444, 40190888, 80381776]

約数ペア:

[(1, 80381776), (2, 40190888), (4, 20095444), (8, 10047722), (16, 5023861), (67, 1199728), (134, 599864), (167, 481328), (268, 299932), (334, 240664), (449, 179024), (536, 149966), (668, 120332), (898, 89512), (1072, 74983), (1336, 60166), (1796, 44756), (2672, 30083), (3592, 22378), (7184, 11189)]