18758535

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 31088640

約数和(自身を除く): 12330105

約数列:

[1, 3, 5, 15, 43, 127, 129, 215, 229, 381, 635, 645, 687, 1145, 1905, 3435, 5461, 9847, 16383, 27305, 29083, 29541, 49235, 81915, 87249, 145415, 147705, 436245, 1250569, 3751707, 6252845, 18758535]

約数ペア:

[(1, 18758535), (3, 6252845), (5, 3751707), (15, 1250569), (43, 436245), (127, 147705), (129, 145415), (215, 87249), (229, 81915), (381, 49235), (635, 29541), (645, 29083), (687, 27305), (1145, 16383), (1905, 9847), (3435, 5461)]