128506743

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{227}}^1\times {\mathrm{241}}^1$

素因数の和:509

約数の個数: 40

約数和(自身を含む): 200288880

約数和(自身を除く): 71782137

約数列:

[1, 3, 9, 27, 29, 81, 87, 227, 241, 261, 681, 723, 783, 2043, 2169, 2349, 6129, 6507, 6583, 6989, 18387, 19521, 19749, 20967, 54707, 59247, 62901, 164121, 177741, 188703, 492363, 533223, 566109, 1477089, 1586503, 4431267, 4759509, 14278527, 42835581, 128506743]

約数ペア:

[(1, 128506743), (3, 42835581), (9, 14278527), (27, 4759509), (29, 4431267), (81, 1586503), (87, 1477089), (227, 566109), (241, 533223), (261, 492363), (681, 188703), (723, 177741), (783, 164121), (2043, 62901), (2169, 59247), (2349, 54707), (6129, 20967), (6507, 19749), (6583, 19521), (6989, 18387)]