21817760

素因数分解:

$2^5\times 5^1\times {\mathrm{136361}}^1$

素因数の和:136376

約数の個数: 24

約数和(自身を含む): 51544836

約数和(自身を除く): 29727076

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 136361, 272722, 545444, 681805, 1090888, 1363610, 2181776, 2727220, 4363552, 5454440, 10908880, 21817760]

約数ペア:

[(1, 21817760), (2, 10908880), (4, 5454440), (5, 4363552), (8, 2727220), (10, 2181776), (16, 1363610), (20, 1090888), (32, 681805), (40, 545444), (80, 272722), (160, 136361)]