18914090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 38191608

約数和(自身を除く): 19277518

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 173, 290, 346, 377, 754, 841, 865, 1682, 1730, 1885, 2249, 3770, 4205, 4498, 5017, 8410, 10034, 10933, 11245, 21866, 22490, 25085, 50170, 54665, 65221, 109330, 130442, 145493, 290986, 326105, 652210, 727465, 1454930, 1891409, 3782818, 9457045, 18914090]

約数ペア:

[(1, 18914090), (2, 9457045), (5, 3782818), (10, 1891409), (13, 1454930), (26, 727465), (29, 652210), (58, 326105), (65, 290986), (130, 145493), (145, 130442), (173, 109330), (290, 65221), (346, 54665), (377, 50170), (754, 25085), (841, 22490), (865, 21866), (1682, 11245), (1730, 10933), (1885, 10034), (2249, 8410), (3770, 5017), (4205, 4498)]