21766160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20929}}^1$

素因数の和:20955

約数の個数: 40

約数和(自身を含む): 54501720

約数和(自身を除く): 32735560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20929, 41858, 83716, 104645, 167432, 209290, 272077, 334864, 418580, 544154, 837160, 1088308, 1360385, 1674320, 2176616, 2720770, 4353232, 5441540, 10883080, 21766160]

約数ペア:

[(1, 21766160), (2, 10883080), (4, 5441540), (5, 4353232), (8, 2720770), (10, 2176616), (13, 1674320), (16, 1360385), (20, 1088308), (26, 837160), (40, 544154), (52, 418580), (65, 334864), (80, 272077), (104, 209290), (130, 167432), (208, 104645), (260, 83716), (520, 41858), (1040, 20929)]