256901560

素因数分解:

$2^3\times 5^1\times {\mathrm{6422539}}^1$

素因数の和:6422550

約数の個数: 16

約数和(自身を含む): 578028600

約数和(自身を除く): 321127040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6422539, 12845078, 25690156, 32112695, 51380312, 64225390, 128450780, 256901560]

約数ペア:

[(1, 256901560), (2, 128450780), (4, 64225390), (5, 51380312), (8, 32112695), (10, 25690156), (20, 12845078), (40, 6422539)]