20867584

素因数分解:

$2^9\times {\mathrm{53}}^1\times {\mathrm{769}}^1$

素因数の和:840

約数の個数: 40

約数和(自身を含む): 42536340

約数和(自身を除く): 21668756

約数列:

[1, 2, 4, 8, 16, 32, 53, 64, 106, 128, 212, 256, 424, 512, 769, 848, 1538, 1696, 3076, 3392, 6152, 6784, 12304, 13568, 24608, 27136, 40757, 49216, 81514, 98432, 163028, 196864, 326056, 393728, 652112, 1304224, 2608448, 5216896, 10433792, 20867584]

約数ペア:

[(1, 20867584), (2, 10433792), (4, 5216896), (8, 2608448), (16, 1304224), (32, 652112), (53, 393728), (64, 326056), (106, 196864), (128, 163028), (212, 98432), (256, 81514), (424, 49216), (512, 40757), (769, 27136), (848, 24608), (1538, 13568), (1696, 12304), (3076, 6784), (3392, 6152)]