20571760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{241}}^1$

素因数の和:362

約数の個数: 80

約数和(自身を含む): 52934112

約数和(自身を除く): 32362352

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 97, 110, 176, 194, 220, 241, 388, 440, 482, 485, 776, 880, 964, 970, 1067, 1205, 1552, 1928, 1940, 2134, 2410, 2651, 3856, 3880, 4268, 4820, 5302, 5335, 7760, 8536, 9640, 10604, 10670, 13255, 17072, 19280, 21208, 21340, 23377, 26510, 42416, 42680, 46754, 53020, 85360, 93508, 106040, 116885, 187016, 212080, 233770, 257147, 374032, 467540, 514294, 935080, 1028588, 1285735, 1870160, 2057176, 2571470, 4114352, 5142940, 10285880, 20571760]

約数ペア:

[(1, 20571760), (2, 10285880), (4, 5142940), (5, 4114352), (8, 2571470), (10, 2057176), (11, 1870160), (16, 1285735), (20, 1028588), (22, 935080), (40, 514294), (44, 467540), (55, 374032), (80, 257147), (88, 233770), (97, 212080), (110, 187016), (176, 116885), (194, 106040), (220, 93508), (241, 85360), (388, 53020), (440, 46754), (482, 42680), (485, 42416), (776, 26510), (880, 23377), (964, 21340), (970, 21208), (1067, 19280), (1205, 17072), (1552, 13255), (1928, 10670), (1940, 10604), (2134, 9640), (2410, 8536), (2651, 7760), (3856, 5335), (3880, 5302), (4268, 4820)]