21698720

素因数分解:

$2^5\times 5^1\times {\mathrm{135617}}^1$

素因数の和:135632

約数の個数: 24

約数和(自身を含む): 51263604

約数和(自身を除く): 29564884

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135617, 271234, 542468, 678085, 1084936, 1356170, 2169872, 2712340, 4339744, 5424680, 10849360, 21698720]

約数ペア:

[(1, 21698720), (2, 10849360), (4, 5424680), (5, 4339744), (8, 2712340), (10, 2169872), (16, 1356170), (20, 1084936), (32, 678085), (40, 542468), (80, 271234), (160, 135617)]