20419160

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{809}}^1$

素因数の和:1451

約数の個数: 32

約数和(自身を含む): 46072800

約数和(自身を除く): 25653640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 809, 1262, 1618, 2524, 3155, 3236, 4045, 5048, 6310, 6472, 8090, 12620, 16180, 25240, 32360, 510479, 1020958, 2041916, 2552395, 4083832, 5104790, 10209580, 20419160]

約数ペア:

[(1, 20419160), (2, 10209580), (4, 5104790), (5, 4083832), (8, 2552395), (10, 2041916), (20, 1020958), (40, 510479), (631, 32360), (809, 25240), (1262, 16180), (1618, 12620), (2524, 8090), (3155, 6472), (3236, 6310), (4045, 5048)]