21878640

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1447}}^1$

素因数の和:1476

約数の個数: 160

約数和(自身を含む): 86184960

約数和(自身を除く): 64306320

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, 1447, 1512, 1680, 1890, 2160, 2520, 2894, 3024, 3780, 4341, 5040, 5788, 7235, 7560, 8682, 10129, 11576, 13023, 14470, 15120, 17364, 20258, 21705, 23152, 26046, 28940, 30387, 34728, 39069, 40516, 43410, 50645, 52092, 57880, 60774, 65115, 69456, 78138, 81032, 86820, 91161, 101290, 104184, 115760, 121548, 130230, 151935, 156276, 162064, 173640, 182322, 195345, 202580, 208368, 243096, 260460, 273483, 303870, 312552, 347280, 364644, 390690, 405160, 455805, 486192, 520920, 546966, 607740, 625104, 729288, 781380, 810320, 911610, 1041840, 1093932, 1215480, 1367415, 1458576, 1562760, 1823220, 2187864, 2430960, 2734830, 3125520, 3646440, 4375728, 5469660, 7292880, 10939320, 21878640]

約数ペア:

[(1, 21878640), (2, 10939320), (3, 7292880), (4, 5469660), (5, 4375728), (6, 3646440), (7, 3125520), (8, 2734830), (9, 2430960), (10, 2187864), (12, 1823220), (14, 1562760), (15, 1458576), (16, 1367415), (18, 1215480), (20, 1093932), (21, 1041840), (24, 911610), (27, 810320), (28, 781380), (30, 729288), (35, 625104), (36, 607740), (40, 546966), (42, 520920), (45, 486192), (48, 455805), (54, 405160), (56, 390690), (60, 364644), (63, 347280), (70, 312552), (72, 303870), (80, 273483), (84, 260460), (90, 243096), (105, 208368), (108, 202580), (112, 195345), (120, 182322), (126, 173640), (135, 162064), (140, 156276), (144, 151935), (168, 130230), (180, 121548), (189, 115760), (210, 104184), (216, 101290), (240, 91161), (252, 86820), (270, 81032), (280, 78138), (315, 69456), (336, 65115), (360, 60774), (378, 57880), (420, 52092), (432, 50645), (504, 43410), (540, 40516), (560, 39069), (630, 34728), (720, 30387), (756, 28940), (840, 26046), (945, 23152), (1008, 21705), (1080, 20258), (1260, 17364), (1447, 15120), (1512, 14470), (1680, 13023), (1890, 11576), (2160, 10129), (2520, 8682), (2894, 7560), (3024, 7235), (3780, 5788), (4341, 5040)]