21894565

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 35458560

約数和(自身を除く): 13563995

約数列:

[1, 5, 7, 11, 29, 35, 37, 53, 55, 77, 145, 185, 203, 259, 265, 319, 371, 385, 407, 583, 1015, 1073, 1295, 1537, 1595, 1855, 1961, 2035, 2233, 2849, 2915, 4081, 5365, 7511, 7685, 9805, 10759, 11165, 11803, 13727, 14245, 16907, 20405, 21571, 37555, 53795, 56869, 59015, 68635, 82621, 84535, 107855, 118349, 150997, 284345, 398083, 413105, 591745, 625559, 754985, 1990415, 3127795, 4378913, 21894565]

約数ペア:

[(1, 21894565), (5, 4378913), (7, 3127795), (11, 1990415), (29, 754985), (35, 625559), (37, 591745), (53, 413105), (55, 398083), (77, 284345), (145, 150997), (185, 118349), (203, 107855), (259, 84535), (265, 82621), (319, 68635), (371, 59015), (385, 56869), (407, 53795), (583, 37555), (1015, 21571), (1073, 20405), (1295, 16907), (1537, 14245), (1595, 13727), (1855, 11803), (1961, 11165), (2035, 10759), (2233, 9805), (2849, 7685), (2915, 7511), (4081, 5365)]