640297980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{727}}^1$

素因数の和:985

約数の個数: 192

約数和(自身を含む): 2289530880

約数和(自身を除く): 1649232900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 233, 252, 270, 315, 378, 420, 466, 540, 630, 699, 727, 756, 932, 945, 1165, 1260, 1398, 1454, 1631, 1890, 2097, 2181, 2330, 2796, 2908, 3262, 3495, 3635, 3780, 4194, 4362, 4660, 4893, 5089, 6291, 6524, 6543, 6990, 7270, 8155, 8388, 8724, 9786, 10178, 10485, 10905, 12582, 13086, 13980, 14540, 14679, 15267, 16310, 19572, 19629, 20356, 20970, 21810, 24465, 25164, 25445, 26172, 29358, 30534, 31455, 32620, 32715, 39258, 41940, 43620, 44037, 45801, 48930, 50890, 58716, 61068, 62910, 65430, 73395, 76335, 78516, 88074, 91602, 97860, 98145, 101780, 125820, 130860, 137403, 146790, 152670, 169391, 176148, 183204, 196290, 220185, 229005, 274806, 293580, 305340, 338782, 392580, 440370, 458010, 508173, 549612, 677564, 687015, 846955, 880740, 916020, 1016346, 1185737, 1374030, 1524519, 1693910, 2032692, 2371474, 2540865, 2748060, 3049038, 3387820, 3557211, 4573557, 4742948, 5081730, 5928685, 6098076, 7114422, 7622595, 9147114, 10163460, 10671633, 11857370, 14228844, 15245190, 17786055, 18294228, 21343266, 22867785, 23714740, 30490380, 32014899, 35572110, 42686532, 45735570, 53358165, 64029798, 71144220, 91471140, 106716330, 128059596, 160074495, 213432660, 320148990, 640297980]

約数ペア:

[(1, 640297980), (2, 320148990), (3, 213432660), (4, 160074495), (5, 128059596), (6, 106716330), (7, 91471140), (9, 71144220), (10, 64029798), (12, 53358165), (14, 45735570), (15, 42686532), (18, 35572110), (20, 32014899), (21, 30490380), (27, 23714740), (28, 22867785), (30, 21343266), (35, 18294228), (36, 17786055), (42, 15245190), (45, 14228844), (54, 11857370), (60, 10671633), (63, 10163460), (70, 9147114), (84, 7622595), (90, 7114422), (105, 6098076), (108, 5928685), (126, 5081730), (135, 4742948), (140, 4573557), (180, 3557211), (189, 3387820), (210, 3049038), (233, 2748060), (252, 2540865), (270, 2371474), (315, 2032692), (378, 1693910), (420, 1524519), (466, 1374030), (540, 1185737), (630, 1016346), (699, 916020), (727, 880740), (756, 846955), (932, 687015), (945, 677564), (1165, 549612), (1260, 508173), (1398, 458010), (1454, 440370), (1631, 392580), (1890, 338782), (2097, 305340), (2181, 293580), (2330, 274806), (2796, 229005), (2908, 220185), (3262, 196290), (3495, 183204), (3635, 176148), (3780, 169391), (4194, 152670), (4362, 146790), (4660, 137403), (4893, 130860), (5089, 125820), (6291, 101780), (6524, 98145), (6543, 97860), (6990, 91602), (7270, 88074), (8155, 78516), (8388, 76335), (8724, 73395), (9786, 65430), (10178, 62910), (10485, 61068), (10905, 58716), (12582, 50890), (13086, 48930), (13980, 45801), (14540, 44037), (14679, 43620), (15267, 41940), (16310, 39258), (19572, 32715), (19629, 32620), (20356, 31455), (20970, 30534), (21810, 29358), (24465, 26172), (25164, 25445)]