21602845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 29569536

約数和(自身を除く): 7966691

約数列:

[1, 5, 11, 47, 55, 61, 137, 235, 305, 517, 671, 685, 1507, 2585, 2867, 3355, 6439, 7535, 8357, 14335, 31537, 32195, 41785, 70829, 91927, 157685, 354145, 392779, 459635, 1963895, 4320569, 21602845]

約数ペア:

[(1, 21602845), (5, 4320569), (11, 1963895), (47, 459635), (55, 392779), (61, 354145), (137, 157685), (235, 91927), (305, 70829), (517, 41785), (671, 32195), (685, 31537), (1507, 14335), (2585, 8357), (2867, 7535), (3355, 6439)]