81340560

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{16139}}^1$

素因数の和:16165

約数の個数: 120

約数和(自身を含む): 312212160

約数和(自身を除く): 230871600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 16139, 32278, 48417, 64556, 80695, 96834, 112973, 129112, 145251, 161390, 193668, 225946, 242085, 258224, 290502, 322780, 338919, 387336, 451892, 484170, 564865, 581004, 645560, 677838, 726255, 774672, 903784, 968340, 1016757, 1129730, 1162008, 1291120, 1355676, 1452510, 1694595, 1807568, 1936680, 2033514, 2259460, 2324016, 2711352, 2905020, 3389190, 3873360, 4067028, 4518920, 5083785, 5422704, 5810040, 6778380, 8134056, 9037840, 10167570, 11620080, 13556760, 16268112, 20335140, 27113520, 40670280, 81340560]

約数ペア:

[(1, 81340560), (2, 40670280), (3, 27113520), (4, 20335140), (5, 16268112), (6, 13556760), (7, 11620080), (8, 10167570), (9, 9037840), (10, 8134056), (12, 6778380), (14, 5810040), (15, 5422704), (16, 5083785), (18, 4518920), (20, 4067028), (21, 3873360), (24, 3389190), (28, 2905020), (30, 2711352), (35, 2324016), (36, 2259460), (40, 2033514), (42, 1936680), (45, 1807568), (48, 1694595), (56, 1452510), (60, 1355676), (63, 1291120), (70, 1162008), (72, 1129730), (80, 1016757), (84, 968340), (90, 903784), (105, 774672), (112, 726255), (120, 677838), (126, 645560), (140, 581004), (144, 564865), (168, 484170), (180, 451892), (210, 387336), (240, 338919), (252, 322780), (280, 290502), (315, 258224), (336, 242085), (360, 225946), (420, 193668), (504, 161390), (560, 145251), (630, 129112), (720, 112973), (840, 96834), (1008, 80695), (1260, 64556), (1680, 48417), (2520, 32278), (5040, 16139)]