21000992155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{554189}}^1$

素因数の和:554271

約数の個数: 32

約数和(自身を含む): 30165670080

約数和(自身を除く): 9164677925

約数列:

[1, 5, 11, 13, 53, 55, 65, 143, 265, 583, 689, 715, 2915, 3445, 7579, 37895, 554189, 2770945, 6096079, 7204457, 29372017, 30480395, 36022285, 79249027, 146860085, 323092187, 381836221, 396245135, 1615460935, 1909181105, 4200198431, 21000992155]

約数ペア:

[(1, 21000992155), (5, 4200198431), (11, 1909181105), (13, 1615460935), (53, 396245135), (55, 381836221), (65, 323092187), (143, 146860085), (265, 79249027), (583, 36022285), (689, 30480395), (715, 29372017), (2915, 7204457), (3445, 6096079), (7579, 2770945), (37895, 554189)]