21529800

素因数分解:

$2^3\times 3^5\times 5^2\times {\mathrm{443}}^1$

素因数の和:474

約数の個数: 144

約数和(自身を含む): 75151440

約数和(自身を除く): 53621640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 27, 30, 36, 40, 45, 50, 54, 60, 72, 75, 81, 90, 100, 108, 120, 135, 150, 162, 180, 200, 216, 225, 243, 270, 300, 324, 360, 405, 443, 450, 486, 540, 600, 648, 675, 810, 886, 900, 972, 1080, 1215, 1329, 1350, 1620, 1772, 1800, 1944, 2025, 2215, 2430, 2658, 2700, 3240, 3544, 3987, 4050, 4430, 4860, 5316, 5400, 6075, 6645, 7974, 8100, 8860, 9720, 10632, 11075, 11961, 12150, 13290, 15948, 16200, 17720, 19935, 22150, 23922, 24300, 26580, 31896, 33225, 35883, 39870, 44300, 47844, 48600, 53160, 59805, 66450, 71766, 79740, 88600, 95688, 99675, 107649, 119610, 132900, 143532, 159480, 179415, 199350, 215298, 239220, 265800, 287064, 299025, 358830, 398700, 430596, 478440, 538245, 598050, 717660, 797400, 861192, 897075, 1076490, 1196100, 1435320, 1794150, 2152980, 2392200, 2691225, 3588300, 4305960, 5382450, 7176600, 10764900, 21529800]

約数ペア:

[(1, 21529800), (2, 10764900), (3, 7176600), (4, 5382450), (5, 4305960), (6, 3588300), (8, 2691225), (9, 2392200), (10, 2152980), (12, 1794150), (15, 1435320), (18, 1196100), (20, 1076490), (24, 897075), (25, 861192), (27, 797400), (30, 717660), (36, 598050), (40, 538245), (45, 478440), (50, 430596), (54, 398700), (60, 358830), (72, 299025), (75, 287064), (81, 265800), (90, 239220), (100, 215298), (108, 199350), (120, 179415), (135, 159480), (150, 143532), (162, 132900), (180, 119610), (200, 107649), (216, 99675), (225, 95688), (243, 88600), (270, 79740), (300, 71766), (324, 66450), (360, 59805), (405, 53160), (443, 48600), (450, 47844), (486, 44300), (540, 39870), (600, 35883), (648, 33225), (675, 31896), (810, 26580), (886, 24300), (900, 23922), (972, 22150), (1080, 19935), (1215, 17720), (1329, 16200), (1350, 15948), (1620, 13290), (1772, 12150), (1800, 11961), (1944, 11075), (2025, 10632), (2215, 9720), (2430, 8860), (2658, 8100), (2700, 7974), (3240, 6645), (3544, 6075), (3987, 5400), (4050, 5316), (4430, 4860)]