68377420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1\times {\mathrm{257}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 147456288

約数和(自身を除く): 79078868

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 251, 257, 265, 502, 514, 530, 1004, 1028, 1060, 1255, 1285, 2510, 2570, 5020, 5140, 13303, 13621, 26606, 27242, 53212, 54484, 64507, 66515, 68105, 129014, 133030, 136210, 258028, 266060, 272420, 322535, 645070, 1290140, 3418871, 6837742, 13675484, 17094355, 34188710, 68377420]

約数ペア:

[(1, 68377420), (2, 34188710), (4, 17094355), (5, 13675484), (10, 6837742), (20, 3418871), (53, 1290140), (106, 645070), (212, 322535), (251, 272420), (257, 266060), (265, 258028), (502, 136210), (514, 133030), (530, 129014), (1004, 68105), (1028, 66515), (1060, 64507), (1255, 54484), (1285, 53212), (2510, 27242), (2570, 26606), (5020, 13621), (5140, 13303)]