2008155420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{5581}}^1$

素因数の和:7595

約数の個数: 72

約数和(自身を含む): 6095544000

約数和(自身を除く): 4087388580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1999, 3998, 5581, 5997, 7996, 9995, 11162, 11994, 16743, 17991, 19990, 22324, 23988, 27905, 29985, 33486, 35982, 39980, 50229, 55810, 59970, 66972, 71964, 83715, 89955, 100458, 111620, 119940, 167430, 179910, 200916, 251145, 334860, 359820, 502290, 1004580, 11156419, 22312838, 33469257, 44625676, 55782095, 66938514, 100407771, 111564190, 133877028, 167346285, 200815542, 223128380, 334692570, 401631084, 502038855, 669385140, 1004077710, 2008155420]

約数ペア:

[(1, 2008155420), (2, 1004077710), (3, 669385140), (4, 502038855), (5, 401631084), (6, 334692570), (9, 223128380), (10, 200815542), (12, 167346285), (15, 133877028), (18, 111564190), (20, 100407771), (30, 66938514), (36, 55782095), (45, 44625676), (60, 33469257), (90, 22312838), (180, 11156419), (1999, 1004580), (3998, 502290), (5581, 359820), (5997, 334860), (7996, 251145), (9995, 200916), (11162, 179910), (11994, 167430), (16743, 119940), (17991, 111620), (19990, 100458), (22324, 89955), (23988, 83715), (27905, 71964), (29985, 66972), (33486, 59970), (35982, 55810), (39980, 50229)]