20571975

素因数分解:

$3^4\times 5^2\times {\mathrm{10159}}^1$

素因数の和:10181

約数の個数: 30

約数和(自身を含む): 38110160

約数和(自身を除く): 17538185

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 10159, 30477, 50795, 91431, 152385, 253975, 274293, 457155, 761925, 822879, 1371465, 2285775, 4114395, 6857325, 20571975]

約数ペア:

[(1, 20571975), (3, 6857325), (5, 4114395), (9, 2285775), (15, 1371465), (25, 822879), (27, 761925), (45, 457155), (75, 274293), (81, 253975), (135, 152385), (225, 91431), (405, 50795), (675, 30477), (2025, 10159)]