19725021

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^2$

素因数の和:178

約数の個数: 36

約数和(自身を含む): 31474560

約数和(自身を除く): 11749539

約数列:

[1, 3, 9, 19, 31, 57, 61, 93, 171, 183, 279, 549, 589, 1159, 1767, 1891, 3477, 3721, 5301, 5673, 10431, 11163, 17019, 33489, 35929, 70699, 107787, 115351, 212097, 323361, 346053, 636291, 1038159, 2191669, 6575007, 19725021]

約数ペア:

[(1, 19725021), (3, 6575007), (9, 2191669), (19, 1038159), (31, 636291), (57, 346053), (61, 323361), (93, 212097), (171, 115351), (183, 107787), (279, 70699), (549, 35929), (589, 33489), (1159, 17019), (1767, 11163), (1891, 10431), (3477, 5673), (3721, 5301)]