20115915

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{293}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 13752885

約数列:

[1, 3, 5, 15, 23, 69, 115, 199, 293, 345, 597, 879, 995, 1465, 2985, 4395, 4577, 6739, 13731, 20217, 22885, 33695, 58307, 68655, 101085, 174921, 291535, 874605, 1341061, 4023183, 6705305, 20115915]

約数ペア:

[(1, 20115915), (3, 6705305), (5, 4023183), (15, 1341061), (23, 874605), (69, 291535), (115, 174921), (199, 101085), (293, 68655), (345, 58307), (597, 33695), (879, 22885), (995, 20217), (1465, 13731), (2985, 6739), (4395, 4577)]