81724140

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{827}}^1$

素因数の和:909

約数の個数: 120

約数和(自身を含む): 260889552

約数和(自身を除く): 179165412

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 81, 90, 108, 122, 135, 162, 180, 183, 244, 270, 305, 324, 366, 405, 540, 549, 610, 732, 810, 827, 915, 1098, 1220, 1620, 1647, 1654, 1830, 2196, 2481, 2745, 3294, 3308, 3660, 4135, 4941, 4962, 5490, 6588, 7443, 8235, 8270, 9882, 9924, 10980, 12405, 14886, 16470, 16540, 19764, 22329, 24705, 24810, 29772, 32940, 37215, 44658, 49410, 49620, 50447, 66987, 74430, 89316, 98820, 100894, 111645, 133974, 148860, 151341, 201788, 223290, 252235, 267948, 302682, 334935, 446580, 454023, 504470, 605364, 669870, 756705, 908046, 1008940, 1339740, 1362069, 1513410, 1816092, 2270115, 2724138, 3026820, 4086207, 4540230, 5448276, 6810345, 8172414, 9080460, 13620690, 16344828, 20431035, 27241380, 40862070, 81724140]

約数ペア:

[(1, 81724140), (2, 40862070), (3, 27241380), (4, 20431035), (5, 16344828), (6, 13620690), (9, 9080460), (10, 8172414), (12, 6810345), (15, 5448276), (18, 4540230), (20, 4086207), (27, 3026820), (30, 2724138), (36, 2270115), (45, 1816092), (54, 1513410), (60, 1362069), (61, 1339740), (81, 1008940), (90, 908046), (108, 756705), (122, 669870), (135, 605364), (162, 504470), (180, 454023), (183, 446580), (244, 334935), (270, 302682), (305, 267948), (324, 252235), (366, 223290), (405, 201788), (540, 151341), (549, 148860), (610, 133974), (732, 111645), (810, 100894), (827, 98820), (915, 89316), (1098, 74430), (1220, 66987), (1620, 50447), (1647, 49620), (1654, 49410), (1830, 44658), (2196, 37215), (2481, 32940), (2745, 29772), (3294, 24810), (3308, 24705), (3660, 22329), (4135, 19764), (4941, 16540), (4962, 16470), (5490, 14886), (6588, 12405), (7443, 10980), (8235, 9924), (8270, 9882)]