21250432

素因数分解:

$2^7\times 7^1\times {\mathrm{37}}^1\times {\mathrm{641}}^1$

素因数の和:699

約数の個数: 64

約数和(自身を含む): 49767840

約数和(自身を除く): 28517408

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 37, 56, 64, 74, 112, 128, 148, 224, 259, 296, 448, 518, 592, 641, 896, 1036, 1184, 1282, 2072, 2368, 2564, 4144, 4487, 4736, 5128, 8288, 8974, 10256, 16576, 17948, 20512, 23717, 33152, 35896, 41024, 47434, 71792, 82048, 94868, 143584, 166019, 189736, 287168, 332038, 379472, 574336, 664076, 758944, 1328152, 1517888, 2656304, 3035776, 5312608, 10625216, 21250432]

約数ペア:

[(1, 21250432), (2, 10625216), (4, 5312608), (7, 3035776), (8, 2656304), (14, 1517888), (16, 1328152), (28, 758944), (32, 664076), (37, 574336), (56, 379472), (64, 332038), (74, 287168), (112, 189736), (128, 166019), (148, 143584), (224, 94868), (259, 82048), (296, 71792), (448, 47434), (518, 41024), (592, 35896), (641, 33152), (896, 23717), (1036, 20512), (1184, 17948), (1282, 16576), (2072, 10256), (2368, 8974), (2564, 8288), (4144, 5128), (4487, 4736)]