20018115

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1801}}^1$

素因数の和:1844

約数の個数: 48

約数和(自身を含む): 39355680

約数和(自身を除く): 19337565

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 1801, 2223, 3705, 5403, 9005, 11115, 16209, 23413, 27015, 34219, 70239, 81045, 102657, 117065, 171095, 210717, 307971, 351195, 444847, 513285, 1053585, 1334541, 1539855, 2224235, 4003623, 6672705, 20018115]

約数ペア:

[(1, 20018115), (3, 6672705), (5, 4003623), (9, 2224235), (13, 1539855), (15, 1334541), (19, 1053585), (39, 513285), (45, 444847), (57, 351195), (65, 307971), (95, 210717), (117, 171095), (171, 117065), (195, 102657), (247, 81045), (285, 70239), (585, 34219), (741, 27015), (855, 23413), (1235, 16209), (1801, 11115), (2223, 9005), (3705, 5403)]