20853645

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1543}}^1$

素因数の和:1621

約数の個数: 32

約数和(自身を含む): 36018432

約数和(自身を除く): 15164787

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 255, 265, 795, 901, 1543, 2703, 4505, 4629, 7715, 13515, 23145, 26231, 78693, 81779, 131155, 245337, 393465, 408895, 1226685, 1390243, 4170729, 6951215, 20853645]

約数ペア:

[(1, 20853645), (3, 6951215), (5, 4170729), (15, 1390243), (17, 1226685), (51, 408895), (53, 393465), (85, 245337), (159, 131155), (255, 81779), (265, 78693), (795, 26231), (901, 23145), (1543, 13515), (2703, 7715), (4505, 4629)]