21756392

素因数分解:

$2^3\times 7^2\times {\mathrm{55501}}^1$

素因数の和:55521

約数の個数: 24

約数和(自身を含む): 47454210

約数和(自身を除く): 25697818

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 55501, 111002, 222004, 388507, 444008, 777014, 1554028, 2719549, 3108056, 5439098, 10878196, 21756392]

約数ペア:

[(1, 21756392), (2, 10878196), (4, 5439098), (7, 3108056), (8, 2719549), (14, 1554028), (28, 777014), (49, 444008), (56, 388507), (98, 222004), (196, 111002), (392, 55501)]