238771880

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 546218640

約数和(自身を除く): 307446760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 193, 197, 314, 386, 394, 628, 772, 785, 788, 965, 985, 1256, 1544, 1570, 1576, 1930, 1970, 3140, 3860, 3940, 6280, 7720, 7880, 30301, 30929, 38021, 60602, 61858, 76042, 121204, 123716, 151505, 152084, 154645, 190105, 242408, 247432, 303010, 304168, 309290, 380210, 606020, 618580, 760420, 1212040, 1237160, 1520840, 5969297, 11938594, 23877188, 29846485, 47754376, 59692970, 119385940, 238771880]

約数ペア:

[(1, 238771880), (2, 119385940), (4, 59692970), (5, 47754376), (8, 29846485), (10, 23877188), (20, 11938594), (40, 5969297), (157, 1520840), (193, 1237160), (197, 1212040), (314, 760420), (386, 618580), (394, 606020), (628, 380210), (772, 309290), (785, 304168), (788, 303010), (965, 247432), (985, 242408), (1256, 190105), (1544, 154645), (1570, 152084), (1576, 151505), (1930, 123716), (1970, 121204), (3140, 76042), (3860, 61858), (3940, 60602), (6280, 38021), (7720, 30929), (7880, 30301)]