178049320

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 409424400

約数和(自身を除く): 231375080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 109, 194, 218, 388, 421, 436, 485, 545, 776, 842, 872, 970, 1090, 1684, 1940, 2105, 2180, 3368, 3880, 4210, 4360, 8420, 10573, 16840, 21146, 40837, 42292, 45889, 52865, 81674, 84584, 91778, 105730, 163348, 183556, 204185, 211460, 229445, 326696, 367112, 408370, 422920, 458890, 816740, 917780, 1633480, 1835560, 4451233, 8902466, 17804932, 22256165, 35609864, 44512330, 89024660, 178049320]

約数ペア:

[(1, 178049320), (2, 89024660), (4, 44512330), (5, 35609864), (8, 22256165), (10, 17804932), (20, 8902466), (40, 4451233), (97, 1835560), (109, 1633480), (194, 917780), (218, 816740), (388, 458890), (421, 422920), (436, 408370), (485, 367112), (545, 326696), (776, 229445), (842, 211460), (872, 204185), (970, 183556), (1090, 163348), (1684, 105730), (1940, 91778), (2105, 84584), (2180, 81674), (3368, 52865), (3880, 45889), (4210, 42292), (4360, 40837), (8420, 21146), (10573, 16840)]