128667623

素因数分解:

$7^1\times {\mathrm{47}}^2\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 154053792

約数和(自身を除く): 25386169

約数列:

[1, 7, 47, 53, 157, 329, 371, 1099, 2209, 2491, 7379, 8321, 15463, 17437, 51653, 58247, 117077, 346813, 391087, 819539, 2427691, 2737609, 18381089, 128667623]

約数ペア:

[(1, 128667623), (7, 18381089), (47, 2737609), (53, 2427691), (157, 819539), (329, 391087), (371, 346813), (1099, 117077), (2209, 58247), (2491, 51653), (7379, 17437), (8321, 15463)]