21157976

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16427}}^1$

素因数の和:16463

約数の個数: 32

約数和(自身を含む): 47312640

約数和(自身を除く): 26154664

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 16427, 32854, 65708, 114989, 131416, 229978, 377821, 459956, 755642, 919912, 1511284, 2644747, 3022568, 5289494, 10578988, 21157976]

約数ペア:

[(1, 21157976), (2, 10578988), (4, 5289494), (7, 3022568), (8, 2644747), (14, 1511284), (23, 919912), (28, 755642), (46, 459956), (56, 377821), (92, 229978), (161, 131416), (184, 114989), (322, 65708), (644, 32854), (1288, 16427)]