164515880

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 378378000

約数和(自身を除く): 213862120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 109, 194, 218, 388, 389, 436, 485, 545, 776, 778, 872, 970, 1090, 1556, 1940, 1945, 2180, 3112, 3880, 3890, 4360, 7780, 10573, 15560, 21146, 37733, 42292, 42401, 52865, 75466, 84584, 84802, 105730, 150932, 169604, 188665, 211460, 212005, 301864, 339208, 377330, 422920, 424010, 754660, 848020, 1509320, 1696040, 4112897, 8225794, 16451588, 20564485, 32903176, 41128970, 82257940, 164515880]

約数ペア:

[(1, 164515880), (2, 82257940), (4, 41128970), (5, 32903176), (8, 20564485), (10, 16451588), (20, 8225794), (40, 4112897), (97, 1696040), (109, 1509320), (194, 848020), (218, 754660), (388, 424010), (389, 422920), (436, 377330), (485, 339208), (545, 301864), (776, 212005), (778, 211460), (872, 188665), (970, 169604), (1090, 150932), (1556, 105730), (1940, 84802), (1945, 84584), (2180, 75466), (3112, 52865), (3880, 42401), (3890, 42292), (4360, 37733), (7780, 21146), (10573, 15560)]