21069736

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{64237}}^1$

素因数の和:64284

約数の個数: 16

約数和(自身を含む): 40469940

約数和(自身を除く): 19400204

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 64237, 128474, 256948, 513896, 2633717, 5267434, 10534868, 21069736]

約数ペア:

[(1, 21069736), (2, 10534868), (4, 5267434), (8, 2633717), (41, 513896), (82, 256948), (164, 128474), (328, 64237)]