21159808

素因数分解:

$2^7\times {\mathrm{165311}}^1$

素因数の和:165325

約数の個数: 16

約数和(自身を含む): 42154560

約数和(自身を除く): 20994752

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 165311, 330622, 661244, 1322488, 2644976, 5289952, 10579904, 21159808]

約数ペア:

[(1, 21159808), (2, 10579904), (4, 5289952), (8, 2644976), (16, 1322488), (32, 661244), (64, 330622), (128, 165311)]