688396345

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{257}}^1$

素因数の和:347

約数の個数: 72

約数和(自身を含む): 1075949784

約数和(自身を除く): 387553439

約数列:

[1, 5, 7, 13, 29, 35, 49, 65, 91, 145, 203, 245, 257, 377, 455, 637, 841, 1015, 1285, 1421, 1799, 1885, 2639, 3185, 3341, 4205, 5887, 7105, 7453, 8995, 10933, 12593, 13195, 16705, 18473, 23387, 29435, 37265, 41209, 52171, 54665, 62965, 76531, 92365, 96889, 116935, 163709, 206045, 216137, 260855, 365197, 382655, 484445, 535717, 678223, 818545, 1080685, 1512959, 1825985, 2678585, 2809781, 3391115, 4747561, 7564795, 10590713, 14048905, 19668467, 23737805, 52953565, 98342335, 137679269, 688396345]

約数ペア:

[(1, 688396345), (5, 137679269), (7, 98342335), (13, 52953565), (29, 23737805), (35, 19668467), (49, 14048905), (65, 10590713), (91, 7564795), (145, 4747561), (203, 3391115), (245, 2809781), (257, 2678585), (377, 1825985), (455, 1512959), (637, 1080685), (841, 818545), (1015, 678223), (1285, 535717), (1421, 484445), (1799, 382655), (1885, 365197), (2639, 260855), (3185, 216137), (3341, 206045), (4205, 163709), (5887, 116935), (7105, 96889), (7453, 92365), (8995, 76531), (10933, 62965), (12593, 54665), (13195, 52171), (16705, 41209), (18473, 37265), (23387, 29435)]