640808280

素因数分解:

$2^3\times 3^3\times 5^1\times 7^2\times {\mathrm{12109}}^1$

素因数の和:12143

約数の個数: 192

約数和(自身を含む): 2484972000

約数和(自身を除く): 1844163720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 49, 54, 56, 60, 63, 70, 72, 84, 90, 98, 105, 108, 120, 126, 135, 140, 147, 168, 180, 189, 196, 210, 216, 245, 252, 270, 280, 294, 315, 360, 378, 392, 420, 441, 490, 504, 540, 588, 630, 735, 756, 840, 882, 945, 980, 1080, 1176, 1260, 1323, 1470, 1512, 1764, 1890, 1960, 2205, 2520, 2646, 2940, 3528, 3780, 4410, 5292, 5880, 6615, 7560, 8820, 10584, 12109, 13230, 17640, 24218, 26460, 36327, 48436, 52920, 60545, 72654, 84763, 96872, 108981, 121090, 145308, 169526, 181635, 217962, 242180, 254289, 290616, 326943, 339052, 363270, 423815, 435924, 484360, 508578, 544905, 593341, 653886, 678104, 726540, 762867, 847630, 871848, 1017156, 1089810, 1186682, 1271445, 1307772, 1453080, 1525734, 1634715, 1695260, 1780023, 2034312, 2179620, 2288601, 2373364, 2542890, 2615544, 2966705, 3051468, 3269430, 3390520, 3560046, 3814335, 4359240, 4577202, 4746728, 5085780, 5340069, 5933410, 6102936, 6538860, 7120092, 7628670, 8900115, 9154404, 10171560, 10680138, 11443005, 11866820, 13077720, 14240184, 15257340, 16020207, 17800230, 18308808, 21360276, 22886010, 23733640, 26700345, 30514680, 32040414, 35600460, 42720552, 45772020, 53400690, 64080828, 71200920, 80101035, 91544040, 106801380, 128161656, 160202070, 213602760, 320404140, 640808280]

約数ペア:

[(1, 640808280), (2, 320404140), (3, 213602760), (4, 160202070), (5, 128161656), (6, 106801380), (7, 91544040), (8, 80101035), (9, 71200920), (10, 64080828), (12, 53400690), (14, 45772020), (15, 42720552), (18, 35600460), (20, 32040414), (21, 30514680), (24, 26700345), (27, 23733640), (28, 22886010), (30, 21360276), (35, 18308808), (36, 17800230), (40, 16020207), (42, 15257340), (45, 14240184), (49, 13077720), (54, 11866820), (56, 11443005), (60, 10680138), (63, 10171560), (70, 9154404), (72, 8900115), (84, 7628670), (90, 7120092), (98, 6538860), (105, 6102936), (108, 5933410), (120, 5340069), (126, 5085780), (135, 4746728), (140, 4577202), (147, 4359240), (168, 3814335), (180, 3560046), (189, 3390520), (196, 3269430), (210, 3051468), (216, 2966705), (245, 2615544), (252, 2542890), (270, 2373364), (280, 2288601), (294, 2179620), (315, 2034312), (360, 1780023), (378, 1695260), (392, 1634715), (420, 1525734), (441, 1453080), (490, 1307772), (504, 1271445), (540, 1186682), (588, 1089810), (630, 1017156), (735, 871848), (756, 847630), (840, 762867), (882, 726540), (945, 678104), (980, 653886), (1080, 593341), (1176, 544905), (1260, 508578), (1323, 484360), (1470, 435924), (1512, 423815), (1764, 363270), (1890, 339052), (1960, 326943), (2205, 290616), (2520, 254289), (2646, 242180), (2940, 217962), (3528, 181635), (3780, 169526), (4410, 145308), (5292, 121090), (5880, 108981), (6615, 96872), (7560, 84763), (8820, 72654), (10584, 60545), (12109, 52920), (13230, 48436), (17640, 36327), (24218, 26460)]