999987518

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1\times {\mathrm{1109}}^1$

素因数の和:1580

約数の個数: 32

約数和(自身を含む): 1610388000

約数和(自身を除く): 610400482

約数列:

[1, 2, 19, 38, 61, 122, 389, 778, 1109, 1159, 2218, 2318, 7391, 14782, 21071, 23729, 42142, 47458, 67649, 135298, 431401, 450851, 862802, 901702, 1285331, 2570662, 8196619, 16393238, 26315461, 52630922, 499993759, 999987518]

約数ペア:

[(1, 999987518), (2, 499993759), (19, 52630922), (38, 26315461), (61, 16393238), (122, 8196619), (389, 2570662), (778, 1285331), (1109, 901702), (1159, 862802), (2218, 450851), (2318, 431401), (7391, 135298), (14782, 67649), (21071, 47458), (23729, 42142)]