81774392

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 180195840

約数和(自身を除く): 98421448

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 131, 142, 157, 262, 284, 314, 497, 524, 568, 628, 917, 994, 1048, 1099, 1256, 1834, 1988, 2198, 3668, 3976, 4396, 7336, 8792, 9301, 11147, 18602, 20567, 22294, 37204, 41134, 44588, 65107, 74408, 78029, 82268, 89176, 130214, 143969, 156058, 164536, 260428, 287938, 312116, 520856, 575876, 624232, 1151752, 1460257, 2920514, 5841028, 10221799, 11682056, 20443598, 40887196, 81774392]

約数ペア:

[(1, 81774392), (2, 40887196), (4, 20443598), (7, 11682056), (8, 10221799), (14, 5841028), (28, 2920514), (56, 1460257), (71, 1151752), (131, 624232), (142, 575876), (157, 520856), (262, 312116), (284, 287938), (314, 260428), (497, 164536), (524, 156058), (568, 143969), (628, 130214), (917, 89176), (994, 82268), (1048, 78029), (1099, 74408), (1256, 65107), (1834, 44588), (1988, 41134), (2198, 37204), (3668, 22294), (3976, 20567), (4396, 18602), (7336, 11147), (8792, 9301)]