4257560

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{653}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 9653040

約数和(自身を除く): 5395480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 653, 815, 1304, 1306, 1630, 2612, 3260, 3265, 5224, 6520, 6530, 13060, 26120, 106439, 212878, 425756, 532195, 851512, 1064390, 2128780, 4257560]

約数ペア:

[(1, 4257560), (2, 2128780), (4, 1064390), (5, 851512), (8, 532195), (10, 425756), (20, 212878), (40, 106439), (163, 26120), (326, 13060), (652, 6530), (653, 6520), (815, 5224), (1304, 3265), (1306, 3260), (1630, 2612)]