21783025

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:430

約数の個数: 36

約数和(自身を含む): 31334800

約数和(自身を除く): 9551775

約数列:

[1, 5, 11, 19, 25, 55, 95, 121, 209, 275, 379, 475, 605, 1045, 1895, 2299, 3025, 4169, 5225, 7201, 9475, 11495, 20845, 36005, 45859, 57475, 79211, 104225, 180025, 229295, 396055, 871321, 1146475, 1980275, 4356605, 21783025]

約数ペア:

[(1, 21783025), (5, 4356605), (11, 1980275), (19, 1146475), (25, 871321), (55, 396055), (95, 229295), (121, 180025), (209, 104225), (275, 79211), (379, 57475), (475, 45859), (605, 36005), (1045, 20845), (1895, 11495), (2299, 9475), (3025, 7201), (4169, 5225)]