20582560

素因数分解:

$2^5\times 5^1\times {\mathrm{197}}^1\times {\mathrm{653}}^1$

素因数の和:865

約数の個数: 48

約数和(自身を含む): 48947976

約数和(自身を除く): 28365416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197, 394, 653, 788, 985, 1306, 1576, 1970, 2612, 3152, 3265, 3940, 5224, 6304, 6530, 7880, 10448, 13060, 15760, 20896, 26120, 31520, 52240, 104480, 128641, 257282, 514564, 643205, 1029128, 1286410, 2058256, 2572820, 4116512, 5145640, 10291280, 20582560]

約数ペア:

[(1, 20582560), (2, 10291280), (4, 5145640), (5, 4116512), (8, 2572820), (10, 2058256), (16, 1286410), (20, 1029128), (32, 643205), (40, 514564), (80, 257282), (160, 128641), (197, 104480), (394, 52240), (653, 31520), (788, 26120), (985, 20896), (1306, 15760), (1576, 13060), (1970, 10448), (2612, 7880), (3152, 6530), (3265, 6304), (3940, 5224)]