20408048409

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{373343}}^1$

素因数の和:373509

約数の個数: 32

約数和(自身を含む): 32973742080

約数和(自身を除く): 12565693671

約数列:

[1, 3, 7, 19, 21, 57, 133, 137, 399, 411, 959, 2603, 2877, 7809, 18221, 54663, 373343, 1120029, 2613401, 7093517, 7840203, 21280551, 49654619, 51147991, 148963857, 153443973, 358035937, 971811829, 1074107811, 2915435487, 6802682803, 20408048409]

約数ペア:

[(1, 20408048409), (3, 6802682803), (7, 2915435487), (19, 1074107811), (21, 971811829), (57, 358035937), (133, 153443973), (137, 148963857), (399, 51147991), (411, 49654619), (959, 21280551), (2603, 7840203), (2877, 7093517), (7809, 2613401), (18221, 1120029), (54663, 373343)]