21359475

素因数分解:

$3^2\times 5^2\times {\mathrm{59}}^1\times {\mathrm{1609}}^1$

素因数の和:1684

約数の個数: 36

約数和(自身を含む): 38929800

約数和(自身を除く): 17570325

約数列:

[1, 3, 5, 9, 15, 25, 45, 59, 75, 177, 225, 295, 531, 885, 1475, 1609, 2655, 4425, 4827, 8045, 13275, 14481, 24135, 40225, 72405, 94931, 120675, 284793, 362025, 474655, 854379, 1423965, 2373275, 4271895, 7119825, 21359475]

約数ペア:

[(1, 21359475), (3, 7119825), (5, 4271895), (9, 2373275), (15, 1423965), (25, 854379), (45, 474655), (59, 362025), (75, 284793), (177, 120675), (225, 94931), (295, 72405), (531, 40225), (885, 24135), (1475, 14481), (1609, 13275), (2655, 8045), (4425, 4827)]