21690735

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2797}}^1$

素因数の和:2863

約数の個数: 32

約数和(自身を含む): 38679552

約数和(自身を除く): 16988817

約数列:

[1, 3, 5, 11, 15, 33, 47, 55, 141, 165, 235, 517, 705, 1551, 2585, 2797, 7755, 8391, 13985, 30767, 41955, 92301, 131459, 153835, 394377, 461505, 657295, 1446049, 1971885, 4338147, 7230245, 21690735]

約数ペア:

[(1, 21690735), (3, 7230245), (5, 4338147), (11, 1971885), (15, 1446049), (33, 657295), (47, 461505), (55, 394377), (141, 153835), (165, 131459), (235, 92301), (517, 41955), (705, 30767), (1551, 13985), (2585, 8391), (2797, 7755)]