21812945

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1069}}^1$

素因数の和:1145

約数の個数: 32

約数和(自身を含む): 33281280

約数和(自身を除く): 11468335

約数列:

[1, 5, 7, 11, 35, 53, 55, 77, 265, 371, 385, 583, 1069, 1855, 2915, 4081, 5345, 7483, 11759, 20405, 37415, 56657, 58795, 82313, 283285, 396599, 411565, 623227, 1982995, 3116135, 4362589, 21812945]

約数ペア:

[(1, 21812945), (5, 4362589), (7, 3116135), (11, 1982995), (35, 623227), (53, 411565), (55, 396599), (77, 283285), (265, 82313), (371, 58795), (385, 56657), (583, 37415), (1069, 20405), (1855, 11759), (2915, 7483), (4081, 5345)]