18431577

素因数分解:

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

素因数の和:139

約数の個数: 48

約数和(自身を含む): 30236160

約数和(自身を除く): 11804583

約数列:

[1, 3, 9, 19, 27, 31, 57, 61, 93, 171, 183, 279, 361, 513, 549, 589, 837, 1083, 1159, 1647, 1767, 1891, 3249, 3477, 5301, 5673, 9747, 10431, 11191, 15903, 17019, 22021, 31293, 33573, 35929, 51057, 66063, 100719, 107787, 198189, 302157, 323361, 594567, 682651, 970083, 2047953, 6143859, 18431577]

約数ペア:

[(1, 18431577), (3, 6143859), (9, 2047953), (19, 970083), (27, 682651), (31, 594567), (57, 323361), (61, 302157), (93, 198189), (171, 107787), (183, 100719), (279, 66063), (361, 51057), (513, 35929), (549, 33573), (589, 31293), (837, 22021), (1083, 17019), (1159, 15903), (1647, 11191), (1767, 10431), (1891, 9747), (3249, 5673), (3477, 5301)]