17778811880

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1\times {\mathrm{15641}}^1$

素因数の和:15990

約数の個数: 64

約数和(自身を含む): 40482121680

約数和(自身を除く): 22703309800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 181, 314, 362, 628, 724, 785, 905, 1256, 1448, 1570, 1810, 3140, 3620, 6280, 7240, 15641, 28417, 31282, 56834, 62564, 78205, 113668, 125128, 142085, 156410, 227336, 284170, 312820, 568340, 625640, 1136680, 2455637, 2831021, 4911274, 5662042, 9822548, 11324084, 12278185, 14155105, 19645096, 22648168, 24556370, 28310210, 49112740, 56620420, 98225480, 113240840, 444470297, 888940594, 1777881188, 2222351485, 3555762376, 4444702970, 8889405940, 17778811880]

約数ペア:

[(1, 17778811880), (2, 8889405940), (4, 4444702970), (5, 3555762376), (8, 2222351485), (10, 1777881188), (20, 888940594), (40, 444470297), (157, 113240840), (181, 98225480), (314, 56620420), (362, 49112740), (628, 28310210), (724, 24556370), (785, 22648168), (905, 19645096), (1256, 14155105), (1448, 12278185), (1570, 11324084), (1810, 9822548), (3140, 5662042), (3620, 4911274), (6280, 2831021), (7240, 2455637), (15641, 1136680), (28417, 625640), (31282, 568340), (56834, 312820), (62564, 284170), (78205, 227336), (113668, 156410), (125128, 142085)]