21167245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{577}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 29963520

約数和(自身を除く): 8796275

約数列:

[1, 5, 11, 23, 29, 55, 115, 145, 253, 319, 577, 667, 1265, 1595, 2885, 3335, 6347, 7337, 13271, 16733, 31735, 36685, 66355, 83665, 145981, 184063, 384859, 729905, 920315, 1924295, 4233449, 21167245]

約数ペア:

[(1, 21167245), (5, 4233449), (11, 1924295), (23, 920315), (29, 729905), (55, 384859), (115, 184063), (145, 145981), (253, 83665), (319, 66355), (577, 36685), (667, 31735), (1265, 16733), (1595, 13271), (2885, 7337), (3335, 6347)]