21372540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{337}}^1$

素因数の和:507

約数の個数: 96

約数和(自身を含む): 69049344

約数和(自身を除く): 47676804

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 151, 210, 302, 337, 420, 453, 604, 674, 755, 906, 1011, 1057, 1348, 1510, 1685, 1812, 2022, 2114, 2265, 2359, 3020, 3171, 3370, 4044, 4228, 4530, 4718, 5055, 5285, 6342, 6740, 7077, 9060, 9436, 10110, 10570, 11795, 12684, 14154, 15855, 20220, 21140, 23590, 28308, 31710, 35385, 47180, 50887, 63420, 70770, 101774, 141540, 152661, 203548, 254435, 305322, 356209, 508870, 610644, 712418, 763305, 1017740, 1068627, 1424836, 1526610, 1781045, 2137254, 3053220, 3562090, 4274508, 5343135, 7124180, 10686270, 21372540]

約数ペア:

[(1, 21372540), (2, 10686270), (3, 7124180), (4, 5343135), (5, 4274508), (6, 3562090), (7, 3053220), (10, 2137254), (12, 1781045), (14, 1526610), (15, 1424836), (20, 1068627), (21, 1017740), (28, 763305), (30, 712418), (35, 610644), (42, 508870), (60, 356209), (70, 305322), (84, 254435), (105, 203548), (140, 152661), (151, 141540), (210, 101774), (302, 70770), (337, 63420), (420, 50887), (453, 47180), (604, 35385), (674, 31710), (755, 28308), (906, 23590), (1011, 21140), (1057, 20220), (1348, 15855), (1510, 14154), (1685, 12684), (1812, 11795), (2022, 10570), (2114, 10110), (2265, 9436), (2359, 9060), (3020, 7077), (3171, 6740), (3370, 6342), (4044, 5285), (4228, 5055), (4530, 4718)]