81917880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{229}}^1\times {\mathrm{271}}^1$

素因数の和:525

約数の個数: 128

約数和(自身を含む): 270259200

約数和(自身を除く): 188341320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 229, 264, 271, 330, 440, 458, 542, 660, 687, 813, 916, 1084, 1145, 1320, 1355, 1374, 1626, 1832, 2168, 2290, 2519, 2710, 2748, 2981, 3252, 3435, 4065, 4580, 5038, 5420, 5496, 5962, 6504, 6870, 7557, 8130, 8943, 9160, 10076, 10840, 11924, 12595, 13740, 14905, 15114, 16260, 17886, 20152, 23848, 25190, 27480, 29810, 30228, 32520, 35772, 37785, 44715, 50380, 59620, 60456, 62059, 71544, 75570, 89430, 100760, 119240, 124118, 151140, 178860, 186177, 248236, 302280, 310295, 357720, 372354, 496472, 620590, 682649, 744708, 930885, 1241180, 1365298, 1489416, 1861770, 2047947, 2482360, 2730596, 3413245, 3723540, 4095894, 5461192, 6826490, 7447080, 8191788, 10239735, 13652980, 16383576, 20479470, 27305960, 40958940, 81917880]

約数ペア:

[(1, 81917880), (2, 40958940), (3, 27305960), (4, 20479470), (5, 16383576), (6, 13652980), (8, 10239735), (10, 8191788), (11, 7447080), (12, 6826490), (15, 5461192), (20, 4095894), (22, 3723540), (24, 3413245), (30, 2730596), (33, 2482360), (40, 2047947), (44, 1861770), (55, 1489416), (60, 1365298), (66, 1241180), (88, 930885), (110, 744708), (120, 682649), (132, 620590), (165, 496472), (220, 372354), (229, 357720), (264, 310295), (271, 302280), (330, 248236), (440, 186177), (458, 178860), (542, 151140), (660, 124118), (687, 119240), (813, 100760), (916, 89430), (1084, 75570), (1145, 71544), (1320, 62059), (1355, 60456), (1374, 59620), (1626, 50380), (1832, 44715), (2168, 37785), (2290, 35772), (2519, 32520), (2710, 30228), (2748, 29810), (2981, 27480), (3252, 25190), (3435, 23848), (4065, 20152), (4580, 17886), (5038, 16260), (5420, 15114), (5496, 14905), (5962, 13740), (6504, 12595), (6870, 11924), (7557, 10840), (8130, 10076), (8943, 9160)]