278979120

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{18451}}^1$

素因数の和:18480

約数の個数: 160

約数和(自身を含む): 1098263040

約数和(自身を除く): 819283920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 18451, 36902, 55353, 73804, 92255, 110706, 129157, 147608, 166059, 184510, 221412, 258314, 276765, 295216, 332118, 369020, 387471, 442824, 498177, 516628, 553530, 645785, 664236, 738040, 774942, 830295, 885648, 996354, 1033256, 1107060, 1162413, 1291570, 1328472, 1476080, 1549884, 1660590, 1937355, 1992708, 2066512, 2214120, 2324826, 2490885, 2583140, 2656944, 3099768, 3321180, 3487239, 3874710, 3985416, 4428240, 4649652, 4981770, 5166280, 5812065, 6199536, 6642360, 6974478, 7749420, 7970832, 9299304, 9963540, 10332560, 11624130, 13284720, 13948956, 15498840, 17436195, 18598608, 19927080, 23248260, 27897912, 30997680, 34872390, 39854160, 46496520, 55795824, 69744780, 92993040, 139489560, 278979120]

約数ペア:

[(1, 278979120), (2, 139489560), (3, 92993040), (4, 69744780), (5, 55795824), (6, 46496520), (7, 39854160), (8, 34872390), (9, 30997680), (10, 27897912), (12, 23248260), (14, 19927080), (15, 18598608), (16, 17436195), (18, 15498840), (20, 13948956), (21, 13284720), (24, 11624130), (27, 10332560), (28, 9963540), (30, 9299304), (35, 7970832), (36, 7749420), (40, 6974478), (42, 6642360), (45, 6199536), (48, 5812065), (54, 5166280), (56, 4981770), (60, 4649652), (63, 4428240), (70, 3985416), (72, 3874710), (80, 3487239), (84, 3321180), (90, 3099768), (105, 2656944), (108, 2583140), (112, 2490885), (120, 2324826), (126, 2214120), (135, 2066512), (140, 1992708), (144, 1937355), (168, 1660590), (180, 1549884), (189, 1476080), (210, 1328472), (216, 1291570), (240, 1162413), (252, 1107060), (270, 1033256), (280, 996354), (315, 885648), (336, 830295), (360, 774942), (378, 738040), (420, 664236), (432, 645785), (504, 553530), (540, 516628), (560, 498177), (630, 442824), (720, 387471), (756, 369020), (840, 332118), (945, 295216), (1008, 276765), (1080, 258314), (1260, 221412), (1512, 184510), (1680, 166059), (1890, 147608), (2160, 129157), (2520, 110706), (3024, 92255), (3780, 73804), (5040, 55353), (7560, 36902), (15120, 18451)]