21477960

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{947}}^1$

素因数の和:977

約数の個数: 160

約数和(自身を含む): 82589760

約数和(自身を除く): 61111800

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, 81, 84, 90, 105, 108, 120, 126, 135, 140, 162, 168, 180, 189, 210, 216, 252, 270, 280, 315, 324, 360, 378, 405, 420, 504, 540, 567, 630, 648, 756, 810, 840, 945, 947, 1080, 1134, 1260, 1512, 1620, 1890, 1894, 2268, 2520, 2835, 2841, 3240, 3780, 3788, 4536, 4735, 5670, 5682, 6629, 7560, 7576, 8523, 9470, 11340, 11364, 13258, 14205, 17046, 18940, 19887, 22680, 22728, 25569, 26516, 28410, 33145, 34092, 37880, 39774, 42615, 51138, 53032, 56820, 59661, 66290, 68184, 76707, 79548, 85230, 99435, 102276, 113640, 119322, 127845, 132580, 153414, 159096, 170460, 178983, 198870, 204552, 238644, 255690, 265160, 298305, 306828, 340920, 357966, 383535, 397740, 477288, 511380, 536949, 596610, 613656, 715932, 767070, 795480, 894915, 1022760, 1073898, 1193220, 1431864, 1534140, 1789830, 2147796, 2386440, 2684745, 3068280, 3579660, 4295592, 5369490, 7159320, 10738980, 21477960]

約数ペア:

[(1, 21477960), (2, 10738980), (3, 7159320), (4, 5369490), (5, 4295592), (6, 3579660), (7, 3068280), (8, 2684745), (9, 2386440), (10, 2147796), (12, 1789830), (14, 1534140), (15, 1431864), (18, 1193220), (20, 1073898), (21, 1022760), (24, 894915), (27, 795480), (28, 767070), (30, 715932), (35, 613656), (36, 596610), (40, 536949), (42, 511380), (45, 477288), (54, 397740), (56, 383535), (60, 357966), (63, 340920), (70, 306828), (72, 298305), (81, 265160), (84, 255690), (90, 238644), (105, 204552), (108, 198870), (120, 178983), (126, 170460), (135, 159096), (140, 153414), (162, 132580), (168, 127845), (180, 119322), (189, 113640), (210, 102276), (216, 99435), (252, 85230), (270, 79548), (280, 76707), (315, 68184), (324, 66290), (360, 59661), (378, 56820), (405, 53032), (420, 51138), (504, 42615), (540, 39774), (567, 37880), (630, 34092), (648, 33145), (756, 28410), (810, 26516), (840, 25569), (945, 22728), (947, 22680), (1080, 19887), (1134, 18940), (1260, 17046), (1512, 14205), (1620, 13258), (1890, 11364), (1894, 11340), (2268, 9470), (2520, 8523), (2835, 7576), (2841, 7560), (3240, 6629), (3780, 5682), (3788, 5670), (4536, 4735)]