21286300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{647}}^1$

素因数の和:715

約数の個数: 72

約数和(自身を含む): 53996544

約数和(自身を除く): 32710244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 47, 50, 70, 94, 100, 140, 175, 188, 235, 329, 350, 470, 647, 658, 700, 940, 1175, 1294, 1316, 1645, 2350, 2588, 3235, 3290, 4529, 4700, 6470, 6580, 8225, 9058, 12940, 16175, 16450, 18116, 22645, 30409, 32350, 32900, 45290, 60818, 64700, 90580, 113225, 121636, 152045, 212863, 226450, 304090, 425726, 452900, 608180, 760225, 851452, 1064315, 1520450, 2128630, 3040900, 4257260, 5321575, 10643150, 21286300]

約数ペア:

[(1, 21286300), (2, 10643150), (4, 5321575), (5, 4257260), (7, 3040900), (10, 2128630), (14, 1520450), (20, 1064315), (25, 851452), (28, 760225), (35, 608180), (47, 452900), (50, 425726), (70, 304090), (94, 226450), (100, 212863), (140, 152045), (175, 121636), (188, 113225), (235, 90580), (329, 64700), (350, 60818), (470, 45290), (647, 32900), (658, 32350), (700, 30409), (940, 22645), (1175, 18116), (1294, 16450), (1316, 16175), (1645, 12940), (2350, 9058), (2588, 8225), (3235, 6580), (3290, 6470), (4529, 4700)]