21095680

素因数分解:

$2^8\times 5^1\times {\mathrm{16481}}^1$

素因数の和:16502

約数の個数: 36

約数和(自身を含む): 50533812

約数和(自身を除く): 29438132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16481, 32962, 65924, 82405, 131848, 164810, 263696, 329620, 527392, 659240, 1054784, 1318480, 2109568, 2636960, 4219136, 5273920, 10547840, 21095680]

約数ペア:

[(1, 21095680), (2, 10547840), (4, 5273920), (5, 4219136), (8, 2636960), (10, 2109568), (16, 1318480), (20, 1054784), (32, 659240), (40, 527392), (64, 329620), (80, 263696), (128, 164810), (160, 131848), (256, 82405), (320, 65924), (640, 32962), (1280, 16481)]