2121840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{421}}^1$

素因数の和:447

約数の個数: 120

約数和(自身を含む): 8163168

約数和(自身を除く): 6041328

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 421, 504, 560, 630, 720, 840, 842, 1008, 1260, 1263, 1680, 1684, 2105, 2520, 2526, 2947, 3368, 3789, 4210, 5040, 5052, 5894, 6315, 6736, 7578, 8420, 8841, 10104, 11788, 12630, 14735, 15156, 16840, 17682, 18945, 20208, 23576, 25260, 26523, 29470, 30312, 33680, 35364, 37890, 44205, 47152, 50520, 53046, 58940, 60624, 70728, 75780, 88410, 101040, 106092, 117880, 132615, 141456, 151560, 176820, 212184, 235760, 265230, 303120, 353640, 424368, 530460, 707280, 1060920, 2121840]

約数ペア:

[(1, 2121840), (2, 1060920), (3, 707280), (4, 530460), (5, 424368), (6, 353640), (7, 303120), (8, 265230), (9, 235760), (10, 212184), (12, 176820), (14, 151560), (15, 141456), (16, 132615), (18, 117880), (20, 106092), (21, 101040), (24, 88410), (28, 75780), (30, 70728), (35, 60624), (36, 58940), (40, 53046), (42, 50520), (45, 47152), (48, 44205), (56, 37890), (60, 35364), (63, 33680), (70, 30312), (72, 29470), (80, 26523), (84, 25260), (90, 23576), (105, 20208), (112, 18945), (120, 17682), (126, 16840), (140, 15156), (144, 14735), (168, 12630), (180, 11788), (210, 10104), (240, 8841), (252, 8420), (280, 7578), (315, 6736), (336, 6315), (360, 5894), (420, 5052), (421, 5040), (504, 4210), (560, 3789), (630, 3368), (720, 2947), (840, 2526), (842, 2520), (1008, 2105), (1260, 1684), (1263, 1680)]