21841280

素因数分解:

$2^7\times 5^1\times {\mathrm{34127}}^1$

素因数の和:34146

約数の個数: 32

約数和(自身を含む): 52215840

約数和(自身を除く): 30374560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 34127, 68254, 136508, 170635, 273016, 341270, 546032, 682540, 1092064, 1365080, 2184128, 2730160, 4368256, 5460320, 10920640, 21841280]

約数ペア:

[(1, 21841280), (2, 10920640), (4, 5460320), (5, 4368256), (8, 2730160), (10, 2184128), (16, 1365080), (20, 1092064), (32, 682540), (40, 546032), (64, 341270), (80, 273016), (128, 170635), (160, 136508), (320, 68254), (640, 34127)]