208031205

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 365967360

約数和(自身を除く): 157936155

約数列:

[1, 3, 5, 15, 23, 37, 43, 69, 111, 115, 129, 185, 215, 345, 379, 555, 645, 851, 989, 1137, 1591, 1895, 2553, 2967, 4255, 4773, 4945, 5685, 7955, 8717, 12765, 14023, 14835, 16297, 23865, 26151, 36593, 42069, 43585, 48891, 70115, 81485, 109779, 130755, 182965, 210345, 244455, 322529, 374831, 548895, 602989, 967587, 1124493, 1612645, 1808967, 1874155, 3014945, 4837935, 5622465, 9044835, 13868747, 41606241, 69343735, 208031205]

約数ペア:

[(1, 208031205), (3, 69343735), (5, 41606241), (15, 13868747), (23, 9044835), (37, 5622465), (43, 4837935), (69, 3014945), (111, 1874155), (115, 1808967), (129, 1612645), (185, 1124493), (215, 967587), (345, 602989), (379, 548895), (555, 374831), (645, 322529), (851, 244455), (989, 210345), (1137, 182965), (1591, 130755), (1895, 109779), (2553, 81485), (2967, 70115), (4255, 48891), (4773, 43585), (4945, 42069), (5685, 36593), (7955, 26151), (8717, 23865), (12765, 16297), (14023, 14835)]