21604448

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:375

約数の個数: 48

約数和(自身を含む): 44470944

約数和(自身を除く): 22866496

約数列:

[1, 2, 4, 8, 16, 32, 37, 71, 74, 142, 148, 257, 284, 296, 514, 568, 592, 1028, 1136, 1184, 2056, 2272, 2627, 4112, 5254, 8224, 9509, 10508, 18247, 19018, 21016, 36494, 38036, 42032, 72988, 76072, 84064, 145976, 152144, 291952, 304288, 583904, 675139, 1350278, 2700556, 5401112, 10802224, 21604448]

約数ペア:

[(1, 21604448), (2, 10802224), (4, 5401112), (8, 2700556), (16, 1350278), (32, 675139), (37, 583904), (71, 304288), (74, 291952), (142, 152144), (148, 145976), (257, 84064), (284, 76072), (296, 72988), (514, 42032), (568, 38036), (592, 36494), (1028, 21016), (1136, 19018), (1184, 18247), (2056, 10508), (2272, 9509), (2627, 8224), (4112, 5254)]