18874215

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1607}}^1$

素因数の和:1653

約数の個数: 40

約数和(自身を含む): 35022240

約数和(自身を除く): 16148025

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 261, 405, 435, 783, 1305, 1607, 2349, 3915, 4821, 8035, 11745, 14463, 24105, 43389, 46603, 72315, 130167, 139809, 216945, 233015, 419427, 650835, 699045, 1258281, 2097135, 3774843, 6291405, 18874215]

約数ペア:

[(1, 18874215), (3, 6291405), (5, 3774843), (9, 2097135), (15, 1258281), (27, 699045), (29, 650835), (45, 419427), (81, 233015), (87, 216945), (135, 139809), (145, 130167), (261, 72315), (405, 46603), (435, 43389), (783, 24105), (1305, 14463), (1607, 11745), (2349, 8035), (3915, 4821)]