421520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{479}}^1$

素因数の和:503

約数の個数: 40

約数和(自身を含む): 1071360

約数和(自身を除く): 649840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 479, 880, 958, 1916, 2395, 3832, 4790, 5269, 7664, 9580, 10538, 19160, 21076, 26345, 38320, 42152, 52690, 84304, 105380, 210760, 421520]

約数ペア:

[(1, 421520), (2, 210760), (4, 105380), (5, 84304), (8, 52690), (10, 42152), (11, 38320), (16, 26345), (20, 21076), (22, 19160), (40, 10538), (44, 9580), (55, 7664), (80, 5269), (88, 4790), (110, 3832), (176, 2395), (220, 1916), (440, 958), (479, 880)]