21237645

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9901}}^1$

素因数の和:9933

約数の個数: 32

約数和(自身を含む): 39924864

約数和(自身を除く): 18687219

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715, 2145, 9901, 29703, 49505, 108911, 128713, 148515, 326733, 386139, 544555, 643565, 1415843, 1633665, 1930695, 4247529, 7079215, 21237645]

約数ペア:

[(1, 21237645), (3, 7079215), (5, 4247529), (11, 1930695), (13, 1633665), (15, 1415843), (33, 643565), (39, 544555), (55, 386139), (65, 326733), (143, 148515), (165, 128713), (195, 108911), (429, 49505), (715, 29703), (2145, 9901)]