661107760

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{123341}}^1$

素因数の和:123421

約数の個数: 40

約数和(自身を含む): 1560029616

約数和(自身を除く): 898921856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 123341, 246682, 493364, 616705, 986728, 1233410, 1973456, 2466820, 4933640, 8263847, 9867280, 16527694, 33055388, 41319235, 66110776, 82638470, 132221552, 165276940, 330553880, 661107760]

約数ペア:

[(1, 661107760), (2, 330553880), (4, 165276940), (5, 132221552), (8, 82638470), (10, 66110776), (16, 41319235), (20, 33055388), (40, 16527694), (67, 9867280), (80, 8263847), (134, 4933640), (268, 2466820), (335, 1973456), (536, 1233410), (670, 986728), (1072, 616705), (1340, 493364), (2680, 246682), (5360, 123341)]