644252364

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{18661}}^1$

素因数の和:18815

約数の個数: 72

約数和(自身を含む): 1874859168

約数和(自身を除く): 1230606804

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 137, 252, 274, 411, 548, 822, 959, 1233, 1644, 1918, 2466, 2877, 3836, 4932, 5754, 8631, 11508, 17262, 18661, 34524, 37322, 55983, 74644, 111966, 130627, 167949, 223932, 261254, 335898, 391881, 522508, 671796, 783762, 1175643, 1567524, 2351286, 2556557, 4702572, 5113114, 7669671, 10226228, 15339342, 17895899, 23009013, 30678684, 35791798, 46018026, 53687697, 71583596, 92036052, 107375394, 161063091, 214750788, 322126182, 644252364]

約数ペア:

[(1, 644252364), (2, 322126182), (3, 214750788), (4, 161063091), (6, 107375394), (7, 92036052), (9, 71583596), (12, 53687697), (14, 46018026), (18, 35791798), (21, 30678684), (28, 23009013), (36, 17895899), (42, 15339342), (63, 10226228), (84, 7669671), (126, 5113114), (137, 4702572), (252, 2556557), (274, 2351286), (411, 1567524), (548, 1175643), (822, 783762), (959, 671796), (1233, 522508), (1644, 391881), (1918, 335898), (2466, 261254), (2877, 223932), (3836, 167949), (4932, 130627), (5754, 111966), (8631, 74644), (11508, 55983), (17262, 37322), (18661, 34524)]