30781800

素因数分解:

$2^3\times 3^2\times 5^2\times 7^2\times {\mathrm{349}}^1$

素因数の和:385

約数の個数: 216

約数和(自身を含む): 120597750

約数和(自身を除く): 89815950

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 25, 28, 30, 35, 36, 40, 42, 45, 49, 50, 56, 60, 63, 70, 72, 75, 84, 90, 98, 100, 105, 120, 126, 140, 147, 150, 168, 175, 180, 196, 200, 210, 225, 245, 252, 280, 294, 300, 315, 349, 350, 360, 392, 420, 441, 450, 490, 504, 525, 588, 600, 630, 698, 700, 735, 840, 882, 900, 980, 1047, 1050, 1176, 1225, 1260, 1396, 1400, 1470, 1575, 1745, 1764, 1800, 1960, 2094, 2100, 2205, 2443, 2450, 2520, 2792, 2940, 3141, 3150, 3490, 3528, 3675, 4188, 4200, 4410, 4886, 4900, 5235, 5880, 6282, 6300, 6980, 7329, 7350, 8376, 8725, 8820, 9772, 9800, 10470, 11025, 12215, 12564, 12600, 13960, 14658, 14700, 15705, 17101, 17450, 17640, 19544, 20940, 21987, 22050, 24430, 25128, 26175, 29316, 29400, 31410, 34202, 34900, 36645, 41880, 43974, 44100, 48860, 51303, 52350, 58632, 61075, 62820, 68404, 69800, 73290, 78525, 85505, 87948, 88200, 97720, 102606, 104700, 109935, 122150, 125640, 136808, 146580, 153909, 157050, 171010, 175896, 183225, 205212, 209400, 219870, 244300, 256515, 293160, 307818, 314100, 342020, 366450, 410424, 427525, 439740, 488600, 513030, 549675, 615636, 628200, 684040, 732900, 769545, 855050, 879480, 1026060, 1099350, 1231272, 1282575, 1465800, 1539090, 1710100, 2052120, 2198700, 2565150, 3078180, 3420200, 3847725, 4397400, 5130300, 6156360, 7695450, 10260600, 15390900, 30781800]

約数ペア:

[(1, 30781800), (2, 15390900), (3, 10260600), (4, 7695450), (5, 6156360), (6, 5130300), (7, 4397400), (8, 3847725), (9, 3420200), (10, 3078180), (12, 2565150), (14, 2198700), (15, 2052120), (18, 1710100), (20, 1539090), (21, 1465800), (24, 1282575), (25, 1231272), (28, 1099350), (30, 1026060), (35, 879480), (36, 855050), (40, 769545), (42, 732900), (45, 684040), (49, 628200), (50, 615636), (56, 549675), (60, 513030), (63, 488600), (70, 439740), (72, 427525), (75, 410424), (84, 366450), (90, 342020), (98, 314100), (100, 307818), (105, 293160), (120, 256515), (126, 244300), (140, 219870), (147, 209400), (150, 205212), (168, 183225), (175, 175896), (180, 171010), (196, 157050), (200, 153909), (210, 146580), (225, 136808), (245, 125640), (252, 122150), (280, 109935), (294, 104700), (300, 102606), (315, 97720), (349, 88200), (350, 87948), (360, 85505), (392, 78525), (420, 73290), (441, 69800), (450, 68404), (490, 62820), (504, 61075), (525, 58632), (588, 52350), (600, 51303), (630, 48860), (698, 44100), (700, 43974), (735, 41880), (840, 36645), (882, 34900), (900, 34202), (980, 31410), (1047, 29400), (1050, 29316), (1176, 26175), (1225, 25128), (1260, 24430), (1396, 22050), (1400, 21987), (1470, 20940), (1575, 19544), (1745, 17640), (1764, 17450), (1800, 17101), (1960, 15705), (2094, 14700), (2100, 14658), (2205, 13960), (2443, 12600), (2450, 12564), (2520, 12215), (2792, 11025), (2940, 10470), (3141, 9800), (3150, 9772), (3490, 8820), (3528, 8725), (3675, 8376), (4188, 7350), (4200, 7329), (4410, 6980), (4886, 6300), (4900, 6282), (5235, 5880)]