21461880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:325

約数の個数: 128

約数和(自身を含む): 71539200

約数和(自身を除く): 50077320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 71, 88, 110, 120, 132, 142, 165, 213, 220, 229, 264, 284, 330, 355, 426, 440, 458, 568, 660, 687, 710, 781, 852, 916, 1065, 1145, 1320, 1374, 1420, 1562, 1704, 1832, 2130, 2290, 2343, 2519, 2748, 2840, 3124, 3435, 3905, 4260, 4580, 4686, 5038, 5496, 6248, 6870, 7557, 7810, 8520, 9160, 9372, 10076, 11715, 12595, 13740, 15114, 15620, 16259, 18744, 20152, 23430, 25190, 27480, 30228, 31240, 32518, 37785, 46860, 48777, 50380, 60456, 65036, 75570, 81295, 93720, 97554, 100760, 130072, 151140, 162590, 178849, 195108, 243885, 302280, 325180, 357698, 390216, 487770, 536547, 650360, 715396, 894245, 975540, 1073094, 1430792, 1788490, 1951080, 2146188, 2682735, 3576980, 4292376, 5365470, 7153960, 10730940, 21461880]

約数ペア:

[(1, 21461880), (2, 10730940), (3, 7153960), (4, 5365470), (5, 4292376), (6, 3576980), (8, 2682735), (10, 2146188), (11, 1951080), (12, 1788490), (15, 1430792), (20, 1073094), (22, 975540), (24, 894245), (30, 715396), (33, 650360), (40, 536547), (44, 487770), (55, 390216), (60, 357698), (66, 325180), (71, 302280), (88, 243885), (110, 195108), (120, 178849), (132, 162590), (142, 151140), (165, 130072), (213, 100760), (220, 97554), (229, 93720), (264, 81295), (284, 75570), (330, 65036), (355, 60456), (426, 50380), (440, 48777), (458, 46860), (568, 37785), (660, 32518), (687, 31240), (710, 30228), (781, 27480), (852, 25190), (916, 23430), (1065, 20152), (1145, 18744), (1320, 16259), (1374, 15620), (1420, 15114), (1562, 13740), (1704, 12595), (1832, 11715), (2130, 10076), (2290, 9372), (2343, 9160), (2519, 8520), (2748, 7810), (2840, 7557), (3124, 6870), (3435, 6248), (3905, 5496), (4260, 5038), (4580, 4686)]