258474880

素因数分解:

$2^7\times 5^1\times {\mathrm{403867}}^1$

素因数の和:403886

約数の個数: 32

約数和(自身を含む): 617918040

約数和(自身を除く): 359443160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 403867, 807734, 1615468, 2019335, 3230936, 4038670, 6461872, 8077340, 12923744, 16154680, 25847488, 32309360, 51694976, 64618720, 129237440, 258474880]

約数ペア:

[(1, 258474880), (2, 129237440), (4, 64618720), (5, 51694976), (8, 32309360), (10, 25847488), (16, 16154680), (20, 12923744), (32, 8077340), (40, 6461872), (64, 4038670), (80, 3230936), (128, 2019335), (160, 1615468), (320, 807734), (640, 403867)]