21711480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25847}}^1$

素因数の和:25868

約数の個数: 64

約数和(自身を含む): 74442240

約数和(自身を除く): 52730760

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, 120, 140, 168, 210, 280, 420, 840, 25847, 51694, 77541, 103388, 129235, 155082, 180929, 206776, 258470, 310164, 361858, 387705, 516940, 542787, 620328, 723716, 775410, 904645, 1033880, 1085574, 1447432, 1550820, 1809290, 2171148, 2713935, 3101640, 3618580, 4342296, 5427870, 7237160, 10855740, 21711480]

約数ペア:

[(1, 21711480), (2, 10855740), (3, 7237160), (4, 5427870), (5, 4342296), (6, 3618580), (7, 3101640), (8, 2713935), (10, 2171148), (12, 1809290), (14, 1550820), (15, 1447432), (20, 1085574), (21, 1033880), (24, 904645), (28, 775410), (30, 723716), (35, 620328), (40, 542787), (42, 516940), (56, 387705), (60, 361858), (70, 310164), (84, 258470), (105, 206776), (120, 180929), (140, 155082), (168, 129235), (210, 103388), (280, 77541), (420, 51694), (840, 25847)]