639732896

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{53}}^2\times {\mathrm{647}}^1$

素因数の和:774

約数の個数: 72

約数和(自身を含む): 1402549344

約数和(自身を除く): 762816448

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 53, 88, 106, 176, 212, 352, 424, 583, 647, 848, 1166, 1294, 1696, 2332, 2588, 2809, 4664, 5176, 5618, 7117, 9328, 10352, 11236, 14234, 18656, 20704, 22472, 28468, 30899, 34291, 44944, 56936, 61798, 68582, 89888, 113872, 123596, 137164, 227744, 247192, 274328, 377201, 494384, 548656, 754402, 988768, 1097312, 1508804, 1817423, 3017608, 3634846, 6035216, 7269692, 12070432, 14539384, 19991653, 29078768, 39983306, 58157536, 79966612, 159933224, 319866448, 639732896]

約数ペア:

[(1, 639732896), (2, 319866448), (4, 159933224), (8, 79966612), (11, 58157536), (16, 39983306), (22, 29078768), (32, 19991653), (44, 14539384), (53, 12070432), (88, 7269692), (106, 6035216), (176, 3634846), (212, 3017608), (352, 1817423), (424, 1508804), (583, 1097312), (647, 988768), (848, 754402), (1166, 548656), (1294, 494384), (1696, 377201), (2332, 274328), (2588, 247192), (2809, 227744), (4664, 137164), (5176, 123596), (5618, 113872), (7117, 89888), (9328, 68582), (10352, 61798), (11236, 56936), (14234, 44944), (18656, 34291), (20704, 30899), (22472, 28468)]