21604688

素因数分解:

$2^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1621}}^1$

素因数の和:1660

約数の個数: 60

約数和(自身を含む): 51589332

約数和(自身を除く): 29984644

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 49, 56, 68, 98, 112, 119, 136, 196, 238, 272, 392, 476, 784, 833, 952, 1621, 1666, 1904, 3242, 3332, 6484, 6664, 11347, 12968, 13328, 22694, 25936, 27557, 45388, 55114, 79429, 90776, 110228, 158858, 181552, 192899, 220456, 317716, 385798, 440912, 635432, 771596, 1270864, 1350293, 1543192, 2700586, 3086384, 5401172, 10802344, 21604688]

約数ペア:

[(1, 21604688), (2, 10802344), (4, 5401172), (7, 3086384), (8, 2700586), (14, 1543192), (16, 1350293), (17, 1270864), (28, 771596), (34, 635432), (49, 440912), (56, 385798), (68, 317716), (98, 220456), (112, 192899), (119, 181552), (136, 158858), (196, 110228), (238, 90776), (272, 79429), (392, 55114), (476, 45388), (784, 27557), (833, 25936), (952, 22694), (1621, 13328), (1666, 12968), (1904, 11347), (3242, 6664), (3332, 6484)]