21000985404

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{556819}}^1$

素因数の和:557282

約数の個数: 48

約数和(自身を含む): 56127456000

約数和(自身を除く): 35126470596

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 449, 898, 1347, 1796, 2694, 3143, 5388, 6286, 9429, 12572, 18858, 37716, 556819, 1113638, 1670457, 2227276, 3340914, 3897733, 6681828, 7795466, 11693199, 15590932, 23386398, 46772796, 250011731, 500023462, 750035193, 1000046924, 1500070386, 1750082117, 3000140772, 3500164234, 5250246351, 7000328468, 10500492702, 21000985404]

約数ペア:

[(1, 21000985404), (2, 10500492702), (3, 7000328468), (4, 5250246351), (6, 3500164234), (7, 3000140772), (12, 1750082117), (14, 1500070386), (21, 1000046924), (28, 750035193), (42, 500023462), (84, 250011731), (449, 46772796), (898, 23386398), (1347, 15590932), (1796, 11693199), (2694, 7795466), (3143, 6681828), (5388, 3897733), (6286, 3340914), (9429, 2227276), (12572, 1670457), (18858, 1113638), (37716, 556819)]