2009781925

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{401}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 2679828480

約数和(自身を除く): 670046555

約数列:

[1, 5, 25, 29, 31, 145, 155, 223, 401, 725, 775, 899, 1115, 2005, 4495, 5575, 6467, 6913, 10025, 11629, 12431, 22475, 32335, 34565, 58145, 62155, 89423, 161675, 172825, 200477, 290725, 310775, 360499, 447115, 1002385, 1802495, 2235575, 2593267, 2772113, 5011925, 9012475, 12966335, 13860565, 64831675, 69302825, 80391277, 401956385, 2009781925]

約数ペア:

[(1, 2009781925), (5, 401956385), (25, 80391277), (29, 69302825), (31, 64831675), (145, 13860565), (155, 12966335), (223, 9012475), (401, 5011925), (725, 2772113), (775, 2593267), (899, 2235575), (1115, 1802495), (2005, 1002385), (4495, 447115), (5575, 360499), (6467, 310775), (6913, 290725), (10025, 200477), (11629, 172825), (12431, 161675), (22475, 89423), (32335, 62155), (34565, 58145)]