20560665

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 34062336

約数和(自身を除く): 13501671

約数列:

[1, 3, 5, 15, 43, 127, 129, 215, 251, 381, 635, 645, 753, 1255, 1905, 3765, 5461, 10793, 16383, 27305, 31877, 32379, 53965, 81915, 95631, 159385, 161895, 478155, 1370711, 4112133, 6853555, 20560665]

約数ペア:

[(1, 20560665), (3, 6853555), (5, 4112133), (15, 1370711), (43, 478155), (127, 161895), (129, 159385), (215, 95631), (251, 81915), (381, 53965), (635, 32379), (645, 31877), (753, 27305), (1255, 16383), (1905, 10793), (3765, 5461)]