18091515

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{257}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 33028128

約数和(自身を除く): 14936613

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 95, 195, 247, 257, 285, 361, 741, 771, 1083, 1235, 1285, 1805, 3341, 3705, 3855, 4693, 4883, 5415, 10023, 14079, 14649, 16705, 23465, 24415, 50115, 63479, 70395, 73245, 92777, 190437, 278331, 317395, 463885, 952185, 1206101, 1391655, 3618303, 6030505, 18091515]

約数ペア:

[(1, 18091515), (3, 6030505), (5, 3618303), (13, 1391655), (15, 1206101), (19, 952185), (39, 463885), (57, 317395), (65, 278331), (95, 190437), (195, 92777), (247, 73245), (257, 70395), (285, 63479), (361, 50115), (741, 24415), (771, 23465), (1083, 16705), (1235, 14649), (1285, 14079), (1805, 10023), (3341, 5415), (3705, 4883), (3855, 4693)]