1988280

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{263}}^1$

素因数の和:290

約数の個数: 128

約数和(自身を含む): 7603200

約数和(自身を除く): 5614920

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, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 263, 270, 280, 315, 360, 378, 420, 504, 526, 540, 630, 756, 789, 840, 945, 1052, 1080, 1260, 1315, 1512, 1578, 1841, 1890, 2104, 2367, 2520, 2630, 3156, 3682, 3780, 3945, 4734, 5260, 5523, 6312, 7101, 7364, 7560, 7890, 9205, 9468, 10520, 11046, 11835, 14202, 14728, 15780, 16569, 18410, 18936, 22092, 23670, 27615, 28404, 31560, 33138, 35505, 36820, 44184, 47340, 49707, 55230, 56808, 66276, 71010, 73640, 82845, 94680, 99414, 110460, 132552, 142020, 165690, 198828, 220920, 248535, 284040, 331380, 397656, 497070, 662760, 994140, 1988280]

約数ペア:

[(1, 1988280), (2, 994140), (3, 662760), (4, 497070), (5, 397656), (6, 331380), (7, 284040), (8, 248535), (9, 220920), (10, 198828), (12, 165690), (14, 142020), (15, 132552), (18, 110460), (20, 99414), (21, 94680), (24, 82845), (27, 73640), (28, 71010), (30, 66276), (35, 56808), (36, 55230), (40, 49707), (42, 47340), (45, 44184), (54, 36820), (56, 35505), (60, 33138), (63, 31560), (70, 28404), (72, 27615), (84, 23670), (90, 22092), (105, 18936), (108, 18410), (120, 16569), (126, 15780), (135, 14728), (140, 14202), (168, 11835), (180, 11046), (189, 10520), (210, 9468), (216, 9205), (252, 7890), (263, 7560), (270, 7364), (280, 7101), (315, 6312), (360, 5523), (378, 5260), (420, 4734), (504, 3945), (526, 3780), (540, 3682), (630, 3156), (756, 2630), (789, 2520), (840, 2367), (945, 2104), (1052, 1890), (1080, 1841), (1260, 1578), (1315, 1512)]