320776720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{479}}^1\times {\mathrm{761}}^1$

素因数の和:1264

約数の個数: 80

約数和(自身を含む): 816376320

約数和(自身を除く): 495599600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 479, 761, 880, 958, 1522, 1916, 2395, 3044, 3805, 3832, 4790, 5269, 6088, 7610, 7664, 8371, 9580, 10538, 12176, 15220, 16742, 19160, 21076, 26345, 30440, 33484, 38320, 41855, 42152, 52690, 60880, 66968, 83710, 84304, 105380, 133936, 167420, 210760, 334840, 364519, 421520, 669680, 729038, 1458076, 1822595, 2916152, 3645190, 4009709, 5832304, 7290380, 8019418, 14580760, 16038836, 20048545, 29161520, 32077672, 40097090, 64155344, 80194180, 160388360, 320776720]

約数ペア:

[(1, 320776720), (2, 160388360), (4, 80194180), (5, 64155344), (8, 40097090), (10, 32077672), (11, 29161520), (16, 20048545), (20, 16038836), (22, 14580760), (40, 8019418), (44, 7290380), (55, 5832304), (80, 4009709), (88, 3645190), (110, 2916152), (176, 1822595), (220, 1458076), (440, 729038), (479, 669680), (761, 421520), (880, 364519), (958, 334840), (1522, 210760), (1916, 167420), (2395, 133936), (3044, 105380), (3805, 84304), (3832, 83710), (4790, 66968), (5269, 60880), (6088, 52690), (7610, 42152), (7664, 41855), (8371, 38320), (9580, 33484), (10538, 30440), (12176, 26345), (15220, 21076), (16742, 19160)]