21385768

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1637}}^1$

素因数の和:1737

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 21071192

約数列:

[1, 2, 4, 8, 23, 46, 71, 92, 142, 184, 284, 568, 1633, 1637, 3266, 3274, 6532, 6548, 13064, 13096, 37651, 75302, 116227, 150604, 232454, 301208, 464908, 929816, 2673221, 5346442, 10692884, 21385768]

約数ペア:

[(1, 21385768), (2, 10692884), (4, 5346442), (8, 2673221), (23, 929816), (46, 464908), (71, 301208), (92, 232454), (142, 150604), (184, 116227), (284, 75302), (568, 37651), (1633, 13096), (1637, 13064), (3266, 6548), (3274, 6532)]