28910245

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{313}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 45102960

約数和(自身を除く): 16192715

約数列:

[1, 5, 7, 13, 29, 35, 49, 65, 91, 145, 203, 245, 313, 377, 455, 637, 1015, 1421, 1565, 1885, 2191, 2639, 3185, 4069, 7105, 9077, 10955, 13195, 15337, 18473, 20345, 28483, 45385, 63539, 76685, 92365, 118001, 142415, 199381, 317695, 444773, 590005, 826007, 996905, 2223865, 4130035, 5782049, 28910245]

約数ペア:

[(1, 28910245), (5, 5782049), (7, 4130035), (13, 2223865), (29, 996905), (35, 826007), (49, 590005), (65, 444773), (91, 317695), (145, 199381), (203, 142415), (245, 118001), (313, 92365), (377, 76685), (455, 63539), (637, 45385), (1015, 28483), (1421, 20345), (1565, 18473), (1885, 15337), (2191, 13195), (2639, 10955), (3185, 9077), (4069, 7105)]