20507805

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 37168560

約数和(自身を除く): 16660755

約数列:

[1, 3, 5, 9, 15, 37, 45, 109, 111, 113, 185, 327, 333, 339, 545, 555, 565, 981, 1017, 1635, 1665, 1695, 4033, 4181, 4905, 5085, 12099, 12317, 12543, 20165, 20905, 36297, 36951, 37629, 60495, 61585, 62715, 110853, 181485, 184755, 188145, 455729, 554265, 1367187, 2278645, 4101561, 6835935, 20507805]

約数ペア:

[(1, 20507805), (3, 6835935), (5, 4101561), (9, 2278645), (15, 1367187), (37, 554265), (45, 455729), (109, 188145), (111, 184755), (113, 181485), (185, 110853), (327, 62715), (333, 61585), (339, 60495), (545, 37629), (555, 36951), (565, 36297), (981, 20905), (1017, 20165), (1635, 12543), (1665, 12317), (1695, 12099), (4033, 5085), (4181, 4905)]