21661080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{241}}^1$

素因数の和:369

約数の個数: 128

約数和(自身を含む): 75271680

約数和(自身を除く): 53610600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 107, 120, 140, 168, 210, 214, 241, 280, 321, 420, 428, 482, 535, 642, 723, 749, 840, 856, 964, 1070, 1205, 1284, 1446, 1498, 1605, 1687, 1928, 2140, 2247, 2410, 2568, 2892, 2996, 3210, 3374, 3615, 3745, 4280, 4494, 4820, 5061, 5784, 5992, 6420, 6748, 7230, 7490, 8435, 8988, 9640, 10122, 11235, 12840, 13496, 14460, 14980, 16870, 17976, 20244, 22470, 25305, 25787, 28920, 29960, 33740, 40488, 44940, 50610, 51574, 67480, 77361, 89880, 101220, 103148, 128935, 154722, 180509, 202440, 206296, 257870, 309444, 361018, 386805, 515740, 541527, 618888, 722036, 773610, 902545, 1031480, 1083054, 1444072, 1547220, 1805090, 2166108, 2707635, 3094440, 3610180, 4332216, 5415270, 7220360, 10830540, 21661080]

約数ペア:

[(1, 21661080), (2, 10830540), (3, 7220360), (4, 5415270), (5, 4332216), (6, 3610180), (7, 3094440), (8, 2707635), (10, 2166108), (12, 1805090), (14, 1547220), (15, 1444072), (20, 1083054), (21, 1031480), (24, 902545), (28, 773610), (30, 722036), (35, 618888), (40, 541527), (42, 515740), (56, 386805), (60, 361018), (70, 309444), (84, 257870), (105, 206296), (107, 202440), (120, 180509), (140, 154722), (168, 128935), (210, 103148), (214, 101220), (241, 89880), (280, 77361), (321, 67480), (420, 51574), (428, 50610), (482, 44940), (535, 40488), (642, 33740), (723, 29960), (749, 28920), (840, 25787), (856, 25305), (964, 22470), (1070, 20244), (1205, 17976), (1284, 16870), (1446, 14980), (1498, 14460), (1605, 13496), (1687, 12840), (1928, 11235), (2140, 10122), (2247, 9640), (2410, 8988), (2568, 8435), (2892, 7490), (2996, 7230), (3210, 6748), (3374, 6420), (3615, 5992), (3745, 5784), (4280, 5061), (4494, 4820)]