21295965

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{241}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 35266176

約数和(自身を除く): 13970211

約数列:

[1, 3, 5, 15, 43, 129, 137, 215, 241, 411, 645, 685, 723, 1205, 2055, 3615, 5891, 10363, 17673, 29455, 31089, 33017, 51815, 88365, 99051, 155445, 165085, 495255, 1419731, 4259193, 7098655, 21295965]

約数ペア:

[(1, 21295965), (3, 7098655), (5, 4259193), (15, 1419731), (43, 495255), (129, 165085), (137, 155445), (215, 99051), (241, 88365), (411, 51815), (645, 33017), (685, 31089), (723, 29455), (1205, 17673), (2055, 10363), (3615, 5891)]