18976815

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{983}}^1$

素因数の和:1021

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 20698065

約数列:

[1, 3, 5, 9, 11, 13, 15, 27, 33, 39, 45, 55, 65, 99, 117, 135, 143, 165, 195, 297, 351, 429, 495, 585, 715, 983, 1287, 1485, 1755, 2145, 2949, 3861, 4915, 6435, 8847, 10813, 12779, 14745, 19305, 26541, 32439, 38337, 44235, 54065, 63895, 97317, 115011, 132705, 140569, 162195, 191685, 291951, 345033, 421707, 486585, 575055, 702845, 1265121, 1459755, 1725165, 2108535, 3795363, 6325605, 18976815]

約数ペア:

[(1, 18976815), (3, 6325605), (5, 3795363), (9, 2108535), (11, 1725165), (13, 1459755), (15, 1265121), (27, 702845), (33, 575055), (39, 486585), (45, 421707), (55, 345033), (65, 291951), (99, 191685), (117, 162195), (135, 140569), (143, 132705), (165, 115011), (195, 97317), (297, 63895), (351, 54065), (429, 44235), (495, 38337), (585, 32439), (715, 26541), (983, 19305), (1287, 14745), (1485, 12779), (1755, 10813), (2145, 8847), (2949, 6435), (3861, 4915)]