20443720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{479}}^1$

素因数の和:598

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 30359480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 97, 110, 194, 220, 388, 440, 479, 485, 776, 958, 970, 1067, 1916, 1940, 2134, 2395, 3832, 3880, 4268, 4790, 5269, 5335, 8536, 9580, 10538, 10670, 19160, 21076, 21340, 26345, 42152, 42680, 46463, 52690, 92926, 105380, 185852, 210760, 232315, 371704, 464630, 511093, 929260, 1022186, 1858520, 2044372, 2555465, 4088744, 5110930, 10221860, 20443720]

約数ペア:

[(1, 20443720), (2, 10221860), (4, 5110930), (5, 4088744), (8, 2555465), (10, 2044372), (11, 1858520), (20, 1022186), (22, 929260), (40, 511093), (44, 464630), (55, 371704), (88, 232315), (97, 210760), (110, 185852), (194, 105380), (220, 92926), (388, 52690), (440, 46463), (479, 42680), (485, 42152), (776, 26345), (958, 21340), (970, 21076), (1067, 19160), (1916, 10670), (1940, 10538), (2134, 9580), (2395, 8536), (3832, 5335), (3880, 5269), (4268, 4790)]