21409664

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{9839}}^1$

素因数の和:9870

約数の個数: 32

約数和(自身を含む): 45165600

約数和(自身を除く): 23755936

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 272, 544, 1088, 2176, 9839, 19678, 39356, 78712, 157424, 167263, 314848, 334526, 629696, 669052, 1259392, 1338104, 2676208, 5352416, 10704832, 21409664]

約数ペア:

[(1, 21409664), (2, 10704832), (4, 5352416), (8, 2676208), (16, 1338104), (17, 1259392), (32, 669052), (34, 629696), (64, 334526), (68, 314848), (128, 167263), (136, 157424), (272, 78712), (544, 39356), (1088, 19678), (2176, 9839)]