20280004

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{751}}^1$

素因数の和:955

約数の個数: 24

約数和(自身を含む): 36595328

約数和(自身を除く): 16315324

約数列:

[1, 2, 4, 43, 86, 157, 172, 314, 628, 751, 1502, 3004, 6751, 13502, 27004, 32293, 64586, 117907, 129172, 235814, 471628, 5070001, 10140002, 20280004]

約数ペア:

[(1, 20280004), (2, 10140002), (4, 5070001), (43, 471628), (86, 235814), (157, 129172), (172, 117907), (314, 64586), (628, 32293), (751, 27004), (1502, 13502), (3004, 6751)]