21123025

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10973}}^1$

素因数の和:11001

約数の個数: 24

約数和(自身を含む): 32658624

約数和(自身を除く): 11535599

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 10973, 54865, 76811, 120703, 274325, 384055, 603515, 844921, 1920275, 3017575, 4224605, 21123025]

約数ペア:

[(1, 21123025), (5, 4224605), (7, 3017575), (11, 1920275), (25, 844921), (35, 603515), (55, 384055), (77, 274325), (175, 120703), (275, 76811), (385, 54865), (1925, 10973)]