21663705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10859}}^1$

素因数の和:10893

約数の個数: 32

約数和(自身を含む): 41702400

約数和(自身を除く): 20038695

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10859, 32577, 54295, 76013, 162885, 206321, 228039, 380065, 618963, 1031605, 1140195, 1444247, 3094815, 4332741, 7221235, 21663705]

約数ペア:

[(1, 21663705), (3, 7221235), (5, 4332741), (7, 3094815), (15, 1444247), (19, 1140195), (21, 1031605), (35, 618963), (57, 380065), (95, 228039), (105, 206321), (133, 162885), (285, 76013), (399, 54295), (665, 32577), (1995, 10859)]