20561282240

素因数分解:

$2^6\times 5^1\times {\mathrm{64254007}}^1$

素因数の和:64254024

約数の個数: 28

約数和(自身を含む): 48961554096

約数和(自身を除く): 28400271856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64254007, 128508014, 257016028, 321270035, 514032056, 642540070, 1028064112, 1285080140, 2056128224, 2570160280, 4112256448, 5140320560, 10280641120, 20561282240]

約数ペア:

[(1, 20561282240), (2, 10280641120), (4, 5140320560), (5, 4112256448), (8, 2570160280), (10, 2056128224), (16, 1285080140), (20, 1028064112), (32, 642540070), (40, 514032056), (64, 321270035), (80, 257016028), (160, 128508014), (320, 64254007)]